Specifications | Range |
---|---|
Display | Multi‐function LCD |
Measurement range | ‐40 to 70°C (‐40 to 158°F) |
Resolution | 0.1°C/°F |
Accuracy | 0.5°C: 0° to 24°C |
1.0°C: ‐20° to ‐1°C and 25° to 49°C | |
2.0°C: ‐40° to ‐21°C and 50° to 200°C | |
0.9°F: 32° to 75°F | |
1.8°F: ‐4° to 31°F and 76° to 120°F | |
3.6°F: ‐40° to ‐5°F and 121° to 392°F | |
Protection safety rating | IP65 rating on meter and sensors |
Low battery indication | Battery symbol appears on the LCD |
Power supply | CR2032 3V button battery |
Meter Dimensions | 86(L) x 57(H) x 30(D) mm / 3.4(L) x 2.2(H) x 1.2(D)” |
Cable length | 209m (9.6 ft.) |
*Click to enlarge,images are for illustrative purposes only.

Extech TM20 Compact Temperature Indicator
Waterproof Temperature Indicator with Stainless Steel Probe
The TM20 is a Compact Waterproof Temperature Indicator with Stainless Steel Probe. Includes 0.78" (20mm) stainless steel probe with 9.6ft (2.9m) cable. Measures temperature from -40°F to 158°F (-40°C to 70°C). Complete with foot stand, temperature sensor, and a CR2032 3V button battery. CE certified.
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- Includes 0.78″ (20mm) stainless steel probe with 9.6ft (2.9m) cable
- Measures temperature from -40°F to 158°F (-40°C to 70°C)
- ±1.8°F/1°C basic accuracy with 0.1° max resolution
- Audible and visual alarm alerts when temperature level is higher or lower than the user programmed
- Min/Max, Data Hold and Low battery indication
- Waterproof housing and sensor designed to meet IP65
- Complete with foot stand, temperature sensor, and a CR2032 3V button battery
Datasheet [Extech TM20 & TM25]