DTM-305, DTM-307 Digital Thermometers Product ID: DTM-305, DTM-307


The thermometer is a device that measures temperature of using a variety of different principles. You can use a thermometer to tell the temperature outside or inside your house, inside ovens, even the temperature of your body if you have fever.

Tecpel provides you digital thermometers which are most widely used because of their convenience. Our thermometers can measure the wide temperature range from -50°C to 1,300°C. Furthermore, with digit LCD display , our thermometers can be more stylish and accurate than others.

It has been 400 years that Galileo invented the earliest thermometer . Now Tecpel give you K-type thermocouple which is inexpensive and, owing to its popularity, available in a wide variety of probes.

Our compact, contemporary thermometers are ideal for use in your home or office. They have outstanding temperature sensor that can make your measure more preciser.

No matter what your purpose, our thermometers are a quick, simple and effective way of getting temperature information. The quality thermometers of Tecpel can fit your needs.

Please also see our hot products as below:

DTM-305: Single input.

DTM-307: Dual input + 0.1 ° C resolution.

Company Web Site: http://www.tecpel.com

  • DTM-305:
    • -50°C ~ 1,300°C (-58°F ~ 2,000°F).
    • 3 1/2 Digit LCD display.
    • K-type thermocouple.
    • Reading Hold °C of °F annunicators.
    • Single thermocouple input.
    • Switchable resolution 0.1°/1.0°;
    • 0.1°C resolution under 199°C
    • Front panel offset adjustment.
    • Automatic low battery indication.
    • Maximum record.
    • Overrange indication.
  • DTM-307:
    • -50°C ~ 1,300°C (-58°F ~ 2,000°F).
    • 3 1/2 Digit LCD display.
    • K-type thermocouple.
    • Function & unit sign display °C of °F annunciators.
    • Dual thermocouple input.
    • Differential temperature (T1-T2).
    • Front panel offset adjustment.
    • Maximum record.
    • Reading hold.
    • Automatic low battery indication
    • Overrange indication.
    • With 0.1°C resolution under 199°C
Specification DTM-305 DTM-307
Output Single Dual
Differential Temperautre (T1-T2) Non Yes


Q & A:

We are currently using your 305 thermometer, and I see 'OL.'mark appears when I turn it on. This mark never disappears and I cannot use this device. What does this sign mean? and what should I do in order to eliminate this?


This could be happened

1. The sensor got damaged.

You’d better try to change another new sensor to check if it works well.

2. If you measure temperature over 200 deg C,

the meter will show “OL” to let you know you should change

the resolution   from “ O.1 “ to “ 1 “.

3.  Before the battery is consumed up, the meter will shall "OL"" too.

4. Finally, the worst possibility is that the meter get damaged and should be returned back to our distributor for after sales service.