The thermometer is built in a black box that can be installed in the panel . Can measure temperature from -50 ℃ ~ +70 ℃ . Length sensor thermometer cable length is approx 80cm.Teplomer I ordered also for friends .friends are satisfied with digital thermometer.Thermometer used in aquariums, freezers, refrigerators, measuring indoor and outdoor temperatures in household,hatchery etc…thermometer is liked. 
But what is great is the accuracy of the temperature i measured him at work with a thermometer temperature calibration laboratory show exactly the same temperature stabilization lasted about 10 minutes. My verdikt and and where to buy My assessment is that it is not no scrap but accurate measuring device especially when considering the price of $2.66 usd and postage it’s free , and they are to him and 2x LR44 batteries. I buy thermometer from tinydeal several times and I have always been satisfied with quality , accuracy , and posting time.If prefer buy on dealextreme thermometer can buy for 3.32 usd Finally, attach a photo lab thermometer and a digital thermometer from sensor. 
Laboratory thermometer shows 49.6 % humidity and temperature 21.9 degrees on a digital thermometer sensor showing 21.9 °C. Description and Parameters of digital thermometer
| Color | Black |
| Material | Plastic housing |
| Features | 1.5″ LCD display; Temperature range: -50~75’C; Accuracy: +/- 0.1’C; Resolution: 0.1’C; Sampling period: 10 seconds |
| Other | Powered by 2 x LR44 batteries (included) |
| Packing List | 1 x Digital thermometer (92cm-cable) |
| 2 x Batteries |
Dimensions: 1.89 in x 1.10 in x 0.59 in (4.8 cm x 2.8 cm x 1.5 cm)
