BD923 Large Display Commercial Thermometer with Waterproof Probe
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 2
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 3
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 4
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 5
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 6
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 7
BD923 Large Display Commercial Thermometer with Waterproof Probe
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 2
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 3
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 4
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 5
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 6
BD923 Large Display Commercial Thermometer with Waterproof Probe – view 7

BD923 Large Display Commercial Thermometer with Waterproof Probe

$189.00 USD
Probe Wire Length

Product Overview

The BD923 Big Digit Thermometer is a large display commercial thermometer designed for applications where temperature must be monitored accurately and read from a distance. Its jumbo illuminated red numbers stand 3 inches tall on a 5.5 x 9.5 inch screen — visible from 75 feet or more — making it an ideal remote temperature monitoring solution for warehouses, walk-in coolers, food service operations, labs, and industrial environments.

Built into a rugged aluminum housing, the BD923 is powered by a standard USB wall adapter (included) and can also run on an optional external rechargeable battery for 3 to 5 days of uninterrupted use — ideal for locations where outlet access is limited.

The included immersion waterproof probe monitors liquid or air temperatures from -40°F to 248°F (-40°C to 120°C) with accuracy of +/- 2°F. Custom calibration is available for higher accuracy over a limited range. Probe cord lengths from 18 ft. up to 100 ft. are available — select your length above.

User-settable high and low temperature alarms alert you with an audible beep and a flashing display when temperatures move outside your target range. The alarm resets automatically once the temperature returns to normal — no manual reset needed.

Important Notes:

  • The probe and sensor are waterproof; the display unit is not — protect the display from moisture.
  • Not recommended for direct sunlight or unshaded outdoor use, as this reduces display visibility.
  • Extending the power cord beyond its stock length voids the warranty against power-related issues.

Specifications

  • Display: 3" tall numbers on a 5.5 x 9.5 in. screen
  • Housing: Rugged aluminum with acrylic plastic lens
  • Power: USB (5VDC, 1000mA adapter included); optional rechargeable battery available
  • Temperature Range: -40°F to 248°F / -40°C to 120°C
  • Accuracy: +/- 2°F (+/- 1°C)
  • User Calibration Range: +/- 20°C
  • Visibility: 75+ feet
  • Probe Cord: 18 ft. standard (30–100 ft. options available)
  • Sensor Tip Length: 1.17" (30 mm)
  • Sensor Diameter (widest): 0.37" (9.5 mm)
  • Sensor Diameter (SS tip): 0.24" (6 mm)
  • Power Cord Length: 4.6 ft.
  • Case Dimensions: 9.7"L x 5.36"H x 0.95"D
  • Wall Mounting: Loops ~5" apart; hang from nails/hooks or screw-mount
  • Temperature Scale: F/C selectable
  • Alarms: Audible + visual (high and low, user-settable; auto-reset)

Applications & Industries

The BD923 is a proven solution wherever accurate, highly visible temperature monitoring is needed — from food service and refrigeration to labs, agriculture, and industrial settings.

Bakeries, Beer & Beverage Coolers, Computer & Server Rooms, Composting, Construction, Correctional Facilities, Dairies, Food Pantries, Food Preparation Hot/Cold Tables, Greenhouses, Hatcheries, Home Use, Hot Tubs & Spas, Hydroponics, Ice Baths, Labs, Logistics, Meat Packing, Museums, Oil & Gas, Painting, Pet Food Manufacturing, Product Packaging, Pubs & Bars, Refrigerated Freight, Refrigeration, Saunas, Seafood, Snow Melters, Supermarkets, Swimming Pools, Warehouses, and Wood Drying.

Manual & Support

Download the BD923 Instruction Manual

Need help with calibration, a replacement probe, or a repair? We can recalibrate and service the BD923 at our facility in Elizabeth, CO. Contact us at info@techinstrument.com or call (800) 390-0004.

Frequently Asked Questions

How far away can the BD923 display be read?
The BD923 is designed to be clearly visible from 75 feet or more under normal indoor lighting conditions. Its 3-inch illuminated red numbers are bright enough to monitor from across a warehouse, production floor, or large cooler.

Is the BD923 waterproof?
The immersion probe and sensor are waterproof and can be submerged in liquids. The display unit itself is not waterproof and must be kept dry and protected from moisture at all times.

Can the BD923 run without being plugged in?
Yes. While the BD923 comes with a USB wall adapter for standard operation, an optional external rechargeable battery is available that provides 3 to 5 days of continuous use without being plugged in.

What probe cord lengths are available?
The BD923 comes standard with an 18 ft. probe cord. Extended lengths of 30, 40, 50, 60, 70, 80, 90, and 100 feet are available and can be selected at the time of purchase.

Can the BD923 be used outdoors?
The BD923 is not recommended for use in direct sunlight or unprotected outdoor environments, as sunlight significantly reduces display visibility. It can be used outdoors when shaded or enclosed in a weatherproof housing.

Does the BD923 have temperature alarms?
Yes. The BD923 features user-settable high and low temperature alarms. When triggered, the unit beeps and the display flashes. The alarm resets automatically when the temperature returns to the normal range — no manual reset is required.

What temperature range does the BD923 cover?
The BD923 measures temperatures from -40°F to 248°F (-40°C to 120°C) with an accuracy of +/- 2°F (+/- 1°C). It can be custom calibrated for higher accuracy over a more limited range.

Can the BD923 be wall mounted?
Yes. The aluminum housing includes wall mounting loops spaced approximately 5 inches apart. The unit can be hung from nails or hooks, or screwed directly into a wall.

What is the warranty on the BD923?
The BD923 comes with a one-year warranty against manufacturing defects. The probe also carries a one-year warranty. Tech Instrumentation can service and recalibrate the unit at our facility in Elizabeth, CO.

Can the probe be replaced?
Yes. A replacement probe (model BD923PR) is available. Note that the thermometer will need to be recalibrated after a probe replacement. Tech Instrumentation can perform the replacement and recalibration for you.

Shipping & Delivery

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

Terms And Conditions

Making A Purchase

Making a purchase could not be easier. Just browse our store and add any items that you wish to buy into the shopping cart. After you have finished your selections, click on 'Checkout' and you will be asked for a few details that we need to be able to complete the order.


We accept credit cards and PayPal for payment. If you are shopping from outside of the USA, place your order and your credit card company will convert the transaction to your own currency. Please note that we cannot ship to all international locations. If we are unable to ship to your location, we will advise you and your credit card will not be charged.

We accept Discover, Visa, Mastercard and American Express. We do not charge for any item until it is ready to ship. Back-ordered items are not charged until they are shipped. You may send your credit card information via phone, fax, snail mail or securely over the Internet.

When confirmation of order is received, this is to indicate that we have received your order. It does not indicate that a contract exists between us. We will indicate acceptance of your order, and hence a contract between us, when we send you an invoice. We have included this term to protect us in the case that a mistake has been made in pricing, we have inadvertently underpriced goods, or we are no longer able to supply a particular product for some reason. In the case of a change of price, we will always contact you first to ensure that the price is acceptable. Credit Card Security
When you place your order with us, your credit card number is encrypted for transmission to us using 128 bit encryption. Your credit card details are never seen by us since they are transmitted directly to the processing company. As such, all refunds must be made to the same card used for the purchase.

Contacting Us
If you need to reach us, please email us using the link on the store page, alternatively, you can reach us at:

Tech Instrumentation Inc.
750 E Kiowa Ave.
PO Box 2029
Elizabeth, CO 80107-2029
USA

Phone: (800) 390-0004 (toll free)
Phone: (303) 841-7567
Fax: (303) 840-8568

NOTE: We do not accept unsolicited advertisements at the facsimile number.


Email: info@techinstrument.com

Shipping And Handling
Shipping and handling charges are shown on a page just prior to your placing the order. We can ship to many parts of the world that are not allowed on the site. Please e-mail us for a shipping quote. Please call if you have any questions. PLEASE NOTE: If you return an item that you ordered with free shipping, we may, at our option, deduct our shipping cost from your refund.

Delivery Schedule
We will normally ship your order to you within 1 to 3 business days. We will notify you via e-mail or telephone if we will be unable to ship within 3 business days. If your order is urgent, please let us know. We'll do our best to expedite urgent orders.
Back Orders
If your item is not in stock and we will not be able to ship within 10 business days, we will back order for you. You will always be emailed with the option to cancel your order if you would rather not wait.
Tax Charges
Orders made from within Colorado - sales tax will be applied. We do not currently charge taxes outside of Colorado, but some of our payment processors may charge sales tax and remit it directly to your state.
Guarantee
Most of our products come with a one year warranty. Most Cooper-Atkins thermometers carry a five-year warranty. Most probes come with a one year warranty. Buyer assumes full responsibility in determining the suitability of these items for the buyer's intended use.
Privacy Policy
Tech Instrumentation will not disclose buyers' information to third parties other than when order details are processed as part of the order fulfillment. Cookies are used on this shopping site to keep track of the contents of your shopping cart, to store delivery addresses if the address book is used and to store your details if you select the 'Remember Me' Option. They are also used after you have logged on as part of that process. You can turn off cookies within your browser by going to 'Tools | Internet Options | Privacy' and selecting to block cookies. If you turn off cookies, you will be unable to place orders or benefit from the other features that use cookies.

Returns Policy
Buyer assumes full responsibility in determining the suitability of these items for the buyer's intended use. Most items come with a minimum one year warranty against defects in manufacturing.

CLAIMS FOR SHORTAGES OR ITEMS DAMAGED IN TRANSIT MUST BE SUBMITTED TO US WITHIN 3 DAYS OF RECEIPT OF THE PRODUCT. IF DAMAGE IS NOTED UPON DELIVERY, PLEASE NOTIFY CARRIER IMMEDIATELY AND BE SURE TO KEEP THE SHIPPING CONTAINER AND ALL PACKING MATERIAL. NO CLAIMS FOR SHORTAGES OR CARRIER DAMAGE WILL BE HONORED BEYOND 3 DAYS AFTER DELIVERY.

New and unopened items sold by Tech Instrumentation may be returned within 30 days of delivery. All items require prior authorization from Tech Instrumentation before they can be returned. We will also pay the return shipping costs if the return is a result of our error (e.g. you received an incorrect or defective item). New and unopened items being returned due to a customer error in ordering or handling will be subject to a restocking fee of 25% and must be returned freight prepaid.

All returns require an RGA number from Tech Instrumentation prior to being returned. Items must be returned postage paid to our facility in order to be considered for refund. Please call 303 841-7567 to obtain an RGA number if you need to return an item. Non defective returns must be in the original unopened packaging with all accessories to be eligible for a refund. Unopened items are subject to a 25% inspection and restocking charge. Non defective items that have been opened or are missing any parts including instructions are subject to a minimum 30% restocking charge. Defective items will be repaired or replaced per mfg. policy. Shipping & Handling charges are not refundable. Service charges (repairs, certifications etc.) and special order items are never refundable. Non defective items must be returned within 30 days of the date we shipped to you in order to be eligible for refund. We pay shipping back to your location for all warranty returns. Items that have been damaged due to misuse or abuse, as judged by Tech Instrumentation are never eligible for a refund.

Refused/Undeliverable shipments: We will refund a minimum 75% of the cost of the product less shipping costs (both ways) for shipments that are returned to us as refused or undeliverable. Service charges (repairs, certifications etc.) are warranted but never refundable. Purchaser agrees to pay all charge-back and related costs incurred by us in the event a credit card charge-back is initiated by the purchaser for refused shipments. Please contact us directly and we will refund per our policies. Shipping and handling charges are not refundable except in the event of an error on our part.

by Tech Instrumentation
Type: Thermometers
ClockDigitsDisplayFacilityHomeHome office windowHome useNeedsNumbersTemperature display
  • 5 stars: 12 (92%)
  • 4 stars: 1 (8%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Scott

Nice product. Shipped within 24 hours of ordering for quick delivery.

A
Alice R.K. (New Philadelphia, US)
Replacement

Very happy with company and product. We had a issues with the first thermometer and the company replaced it wit no problem. The new one works perfect. We love it would recommend the product and company

R
Randy F. (Wellsboro, US)
Please read

I had made a mistake when placing my order, their team corrected my issue quickly and resolved any questions I had.
I will buy from them again without hesitation.

R
RICHARD S. (San Jose, US)
Huge Display

We needed a thermometer with a large display that could be easily seen at a distance. We're using it for an outdoor walk-in refrigerator. The unit also has high & low alarms making it even nicer than what we were looking for. Our order arrived very quickly and packaged very good (double boxed). This unit is not weather sealed so we mounted it in a weather sealed electrical box with a tinted door. The display is so large and bright it can easily be seen through the tinted window. After calibrating, the unit is working great.

M
Mickey S.
great quality and design

well built with quality materials

E
Emily B. (Altoona, US)

BD923 Big Digit Industrial Thermometer

R
Robert

This is my second purchase… well built large numbers. We will definitely be adding more to our facility. Thank you!

R
Rudy S. (Marianna, US)
Thermometer

Arrived very fast, good quality product

M
Michael W. (Franklin, US)
Works Good

Big display that looks and works good. It took longer than expected to receive but finally got it yesterday.

A
Anonymous (Hayesville, US)
Digit thermometer

Its better than we hoped for

G
Gary H. (Oshkosh, US)
So far, so good

A very accurate and readily visible temperature display

R
Robert L. (Los Angeles, US)
Great clock

Great clock

D
David F. (Goodells, US)
Perfect for home use!

It's perfect for my home. My old thermometer kept blowing off the side of my garage 30' away. The BD923 Big Digit Thermometer now hangs in the window on the inside of the garage and the probe exits the side of the garage through a hole I drilled. As I look out my home office window, the 3" high red digits are perfectly legible, day and night. The power cord and probe cable are incredibly long and the thermometer displays the outdoor temperature 24 hours a day. Using the calibration method provided on information sheet accompanying the unit, the temperature reading pretty well matches the reading of the outdoor sensor on my front deck which is fed to my living room clock/thermometer. I don't need the alarms so I can't comment on them. But the BD923 Big Digit Thermometer has more than met my needs.

C
Colin

If the temp probe gets damaged can I put a different probe on?
also do you sell just the probe?

Tech Instrumentation

Yes, we have replacement probes. They need to be soldered onto the PCB though so you will need someone that is able to solder electronics.

T
Thomas R.

Does this come with an infrared sensor?
I want to measure my sawdust paraffin mixture which is a solid product. My infrared gun works great but I want the large screen and consistent readings vs having to pull a trigger.
Ac power aldo

Tech Instrumentation

Unfortunately, an IR sensor is not an option. Only a physical probe which is included.

P
Patrick

What is the probe material made of? We will be using it in saltwater and would need it to be stainless steel.

Tech Instrumentation

The metal bulb is stainless steel.

C
Chris F.

Do you have a probe that can be plumbed into pool/spa piping?

We have a private commercial pool/spa and residents complain the "spa is too cold" We then get a thermometer out and show it is at 100 degrees. Sometimes the gas heater stops working and we don't find out until someone complains.

I saw this and it would be a perfect solution as we have a spot out of the weather where we could mount the display and easily see the spa temp from outside of the pool area.

I had thought of clamping the sensing bulb to the PVC pipe, would not be 100% accurate but close, unless you offer a threaded probe of some kind I could plumb it in.

Thank you,

Tech Instrumentation

While the sensor itself is waterproof, we don't have a threaded connection for it. You should be able to find a thermowell though that would allow you to mount it as you want.

J
Jermaine J.

How does you calibrate.achine?

Tech Instrumentation

It's highly unlikely that your newer BD923 should require calibration, and if you attempt to calibrate it, you're more likely to have a less accurate reading. That said, if you feel the need to do so, you will find the instructions in the manual, available here: https://cdn.shopify.com/s/files/1/0248/3456/files/BD923_Instruction_Manual_09.14.2023.pdf?v=1711138017

G
Gerald

Can the BD923 Digital Display Thermometer be permanently mounted in a three compartment sink.

Tech Instrumentation

Probably not. While the sensor is waterproof, the display unit is not.

A
Allan P.

Do you have this digital thermometer in stock? Difficult to extend the actual probe? Can probe be put into water or need to install dry well? Thank you in advance. Allan

Tech Instrumentation

Yes, it's in stock. We can do extensions here. Some of our customers have extended the probes themselves, but it does void the warranty doing it yourself. Most wire will work - there is nothing special about it. The probe is waterproof so no dry well should be needed under normal circumstances.

E
E

Can I extend the probe cord to 50ft?

Tech Instrumentation

Yes, you can and it should work properly, but please be aware that modifying it yourself does void the warranty.

C
C. W.

Can I use this thermometer at my City Pool. Will the probe withstand the chlorine and other chemicals

Tech Instrumentation

Yes, it may be used at a city pool. Just remember that the cord and sensor are waterproof but the display itself is not and must be protected.

R
Robert A.

Can the thermostat be used outdoor (under cover to protect from rain & snow)?

Tech Instrumentation

It's not recommended unless you can put it inside of a waterproof container.

Product Overview

The BD923 Big Digit Thermometer is a large display commercial thermometer designed for applications where temperature must be monitored accurately and read from a distance. Its jumbo illuminated red numbers stand 3 inches tall on a 5.5 x 9.5 inch screen — visible from 75 feet or more — making it an ideal remote temperature monitoring solution for warehouses, walk-in coolers, food service operations, labs, and industrial environments.

Built into a rugged aluminum housing, the BD923 is powered by a standard USB wall adapter (included) and can also run on an optional external rechargeable battery for 3 to 5 days of uninterrupted use — ideal for locations where outlet access is limited.

The included immersion waterproof probe monitors liquid or air temperatures from -40°F to 248°F (-40°C to 120°C) with accuracy of +/- 2°F. Custom calibration is available for higher accuracy over a limited range. Probe cord lengths from 18 ft. up to 100 ft. are available — select your length above.

User-settable high and low temperature alarms alert you with an audible beep and a flashing display when temperatures move outside your target range. The alarm resets automatically once the temperature returns to normal — no manual reset needed.

Important Notes:

  • The probe and sensor are waterproof; the display unit is not — protect the display from moisture.
  • Not recommended for direct sunlight or unshaded outdoor use, as this reduces display visibility.
  • Extending the power cord beyond its stock length voids the warranty against power-related issues.
Specifications
  • Display: 3" tall numbers on a 5.5 x 9.5 in. screen
  • Housing: Rugged aluminum with acrylic plastic lens
  • Power: USB (5VDC, 1000mA adapter included); optional rechargeable battery available
  • Temperature Range: -40°F to 248°F / -40°C to 120°C
  • Accuracy: +/- 2°F (+/- 1°C)
  • User Calibration Range: +/- 20°C
  • Visibility: 75+ feet
  • Probe Cord: 18 ft. standard (30–100 ft. options available)
  • Sensor Tip Length: 1.17" (30 mm)
  • Sensor Diameter (widest): 0.37" (9.5 mm)
  • Sensor Diameter (SS tip): 0.24" (6 mm)
  • Power Cord Length: 4.6 ft.
  • Case Dimensions: 9.7"L x 5.36"H x 0.95"D
  • Wall Mounting: Loops ~5" apart; hang from nails/hooks or screw-mount
  • Temperature Scale: F/C selectable
  • Alarms: Audible + visual (high and low, user-settable; auto-reset)
Applications & Industries

The BD923 is a proven solution wherever accurate, highly visible temperature monitoring is needed — from food service and refrigeration to labs, agriculture, and industrial settings.

Bakeries, Beer & Beverage Coolers, Computer & Server Rooms, Composting, Construction, Correctional Facilities, Dairies, Food Pantries, Food Preparation Hot/Cold Tables, Greenhouses, Hatcheries, Home Use, Hot Tubs & Spas, Hydroponics, Ice Baths, Labs, Logistics, Meat Packing, Museums, Oil & Gas, Painting, Pet Food Manufacturing, Product Packaging, Pubs & Bars, Refrigerated Freight, Refrigeration, Saunas, Seafood, Snow Melters, Supermarkets, Swimming Pools, Warehouses, and Wood Drying.

Manual & Support

Download the BD923 Instruction Manual

Need help with calibration, a replacement probe, or a repair? We can recalibrate and service the BD923 at our facility in Elizabeth, CO. Contact us at info@techinstrument.com or call (800) 390-0004.

Frequently Asked Questions

How far away can the BD923 display be read?
The BD923 is designed to be clearly visible from 75 feet or more under normal indoor lighting conditions. Its 3-inch illuminated red numbers are bright enough to monitor from across a warehouse, production floor, or large cooler.

Is the BD923 waterproof?
The immersion probe and sensor are waterproof and can be submerged in liquids. The display unit itself is not waterproof and must be kept dry and protected from moisture at all times.

Can the BD923 run without being plugged in?
Yes. While the BD923 comes with a USB wall adapter for standard operation, an optional external rechargeable battery is available that provides 3 to 5 days of continuous use without being plugged in.

What probe cord lengths are available?
The BD923 comes standard with an 18 ft. probe cord. Extended lengths of 30, 40, 50, 60, 70, 80, 90, and 100 feet are available and can be selected at the time of purchase.

Can the BD923 be used outdoors?
The BD923 is not recommended for use in direct sunlight or unprotected outdoor environments, as sunlight significantly reduces display visibility. It can be used outdoors when shaded or enclosed in a weatherproof housing.

Does the BD923 have temperature alarms?
Yes. The BD923 features user-settable high and low temperature alarms. When triggered, the unit beeps and the display flashes. The alarm resets automatically when the temperature returns to the normal range — no manual reset is required.

What temperature range does the BD923 cover?
The BD923 measures temperatures from -40°F to 248°F (-40°C to 120°C) with an accuracy of +/- 2°F (+/- 1°C). It can be custom calibrated for higher accuracy over a more limited range.

Can the BD923 be wall mounted?
Yes. The aluminum housing includes wall mounting loops spaced approximately 5 inches apart. The unit can be hung from nails or hooks, or screwed directly into a wall.

What is the warranty on the BD923?
The BD923 comes with a one-year warranty against manufacturing defects. The probe also carries a one-year warranty. Tech Instrumentation can service and recalibrate the unit at our facility in Elizabeth, CO.

Can the probe be replaced?
Yes. A replacement probe (model BD923PR) is available. Note that the thermometer will need to be recalibrated after a probe replacement. Tech Instrumentation can perform the replacement and recalibration for you.