Extech Waterproof Temperature Indicators

Extech Waterproof Temperature Indicators


The Extech Waterproof Temperature Indicator contains a fast-response sensor to measure temperature in liquids, semi-solids, and air.


  • Waterproof housing and sensor designed to meet IP65
  • User programmed High/Low set points
  • Fast response sensor
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The Extech Waterproof Temperature Indicator provides audible and visual alarm alerts when temperature levels are higher or lower than the user programmed high/low set points. The fast response sensor measures temperature in liquids, semi-solids, and air. LCD displays temperature reading, alarm indicator, and high or low alarm icons.

The TM20 includes a 0.78 inch stainless steel probe with 9.6 foot cable. The sensor measures temperature from -40°F to 158°F. The TM25 model includes a 4.1 inch stainless streel penetration probe with 5 foot cable. The sensor measures temperature from -40°F to 392°F.

The unit has a magnetic back and can be mounted on a metal surface, used on a desktop with the foot stand, or mounted on a wall. The waterproof housing and sensor are waterproof and designed to meet IP65 ratings.

Notable Specifications:
  • Basic accuracy: ±1.8°F/1°C
  • Max resolution: 0.1°
  • TM20 sensor temperature range: -40°F to 158°F (-40°C to 70°C)
  • TM25 sensor temperature range: -40°F to 392°F (-40°C to 200°C)
  • Dimensions:  3.4Lx2.2Hx1.2"D (86Lx57Hx30D mm)
  • Weight: 3.2oz (90g)
What's Included:
  • (1) Display with magnetic back
  • (1) Foot stand
  • (1) Temperature sensor
  • (1) CR2030 3V button battery
Image Part # Product Description Price Stock Order
Extech Waterproof Temperature Indicators TM20 Waterproof temperature indicator, standard probe
Usually ships in 1-2 weeks
Extech Waterproof Temperature Indicators TM25 Waterproof temperature indicator, penetration probe
Usually ships in 1-2 weeks

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