TM26 - Thermometer Extech - Free user manual and instructions
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| Product type | Digital Type-K Thermometer |
| Display | 3½-digit LCD |
| Measurement range | -50°C to 750°C (-58°F to 1382°F) |
| Resolution | 0.1°C / 0.1°F |
| Accuracy | ±0.5% of reading + 1°C |
| Input | Type-K thermocouple (compatible with sub-mini plug) |
| Functions | Max/Min, Data Hold, Auto Power Off |
| Unit switch | °C/°F selectable |
| Dimensions | 110 x 56 x 30 mm |
| Weight | 120 g (including batteries) |
| Power supply | 2 x 1.5V AAA batteries |
| Battery life | Approx. 50 hours |
| Accessories | Bead probe, batteries, user manual |
| Cleaning | Wipe with a soft dry cloth; do not use solvents |
| Safety | Do not measure live electrical circuits |
| Repairability | Replacement batteries and probes available; no internal user-serviceable parts |
| Standards | CE compliant |
Frequently Asked Questions - TM26 Extech
How do I change the temperature unit from Celsius to Fahrenheit?
Press and hold the °C/°F button for two seconds. The display updates automatically.
What type of thermocouple does the TM26 use?
It uses a Type-K thermocouple with a standard sub-miniature connector.
Can I use the thermometer to measure hot surfaces?
Yes, a Type-K probe is suitable for high-temperature measurements up to the probe's rating. Always follow the probe specification.
How do I replace the batteries?
Open the battery compartment at the back, remove the old AAA batteries, and insert two new 1.5V AAA batteries observing polarity.
Why does my thermometer show "OL"?
This indicates overload: the temperature exceeds the measurement range or the probe is not connected properly.
What is the best way to clean the thermometer?
Use a soft dry cloth to wipe the case. Do not use abrasive cleaners or submerge the device in water.
Does the device have an auto power off feature?
Yes, after approximately 10 minutes of inactivity the meter switches off automatically to save battery.
Can I measure the temperature of liquids?
Yes, insert the stainless steel probe into the liquid, ensuring only the shaft is immersed and the handle stays dry.
How do I use the Max/Min function?
Press the MAX/MIN button to display and hold the highest reading. Press again to display and hold the lowest reading.
Where can I find a replacement probe?
Replacement Type-K probes are available from Extech authorized dealers. Ensure the connector matches your device.
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USER MANUAL TM26 Extech
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Product information
Brand : Extech
Model : TM26
Category : Thermometer