PM300-ALM Panel Thermometer with High-Low Alarm - Tech Instrumentation

PM300-ALM Panel Thermometer with High-Low Alarm

  • $9.85 USD
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Our model PM300-ALM is great for OEM, general industrial and hobby applications where you need a panel mount thermometer with alarms. Easy to use, simply snap it into a 2.3" x 1.3" panel cutout. Rear mounted switches are tamper resistant because they're out of sight once installed. OEM quantity discounts are available - call for details.


  • Mini Digital Panel Meter
  • High and Low Alarms
  • °F/ °C switch
  • On/off switch
  • Low battery indicator
  • 1 7/8" x 0.140" Stainless steel sensor
  • Digital display
  • Snaps into Panel, or can be mounted using the supplied suction cup on back of unit


  • Temperature range: -58 to 302 F (-50 to 150 C)
  • Accuracy: -58/-4F, +/-3.6F (2C). -3.9/122F, +/-1.8F(1C). 122.1/212F, +/-3.6F(2C). 212.1/302F, +/-5.4F(3C).
  • Probe size: 1.875" x 0.140" od
  • Cord length: 3' (1 m)
  • Resolution: 0.1 degree
  • Digit height: 0.75"
  • Display size: 1.85" x 0.85"
  • Power source: 1 "LR44" battery
  • Unit size: 2.4" x 1.4" x 0.5"
  • Panel Cutout size: 2.3" x 1.3"

Supplied With:

  • LR44 battery (Approximate one year battery life)

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★ Reviews

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321 reviews
Wireless temp sensor replacement

Great sensor, easy to install and connect with my weather station (less than a minute)

Great Service

Ordered and delivered on time

Poor Quality

Gave 2 stars for fast shipping. Poor quality. Stabbed around 10 bales and it’s already bent. My bales are tight, which they should be. Why would you make a probe with a blunt end and not pointed? This probe is so difficult to get into my bales and due to this, the head is already bent.

I really like the product.

Good features, needs gentle handling

I'm buying a replacement because I use it in my truck and it works well. Because there's no metal to attach the magnet to, I lay it in the little coin compartment above my left knee. I pick it up to read it, so the wire gets flexed a lot where it enters the housing. The insulation wore off and the wire shorted out, so I get a reading of HH.H for the outside temps. I'll probably reinforce the wire on the new one with tape or silicone caulk.

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