specification :

Model	DD-T125	DD-TH125	DD-T250
Measuring Parameter	Temperature	Temperature, Humidity	Temperature
Probe Type	Internal, External	External	Internal, External
Unit	ºC, ºF	Temperature: ºC, ºF; Humidity: %RH	ºC, ºF
Measuring Range	Internal: -30~+65ºC External: -40~+125ºC	Temperature: -40~+125ºC Humidity: 0~100%RH(Non-condensing)	Internal: -30~+65ºC External: -200~+250ºC
Accuracy	±0.2ºC(0~+65ºC) Please check it below for others	Temperature: ±0.2ºC(0~+65ºC);  Please check it below for others Humidity: ±3%RH(10~90%RH, 25ºC) ±4%RH(others)	Internal: ±0.2ºC(0~+65ºC) Please check it below for others External: ±0.5ºC(-100~+100ºC) ±1ºC(others)
Resolution	0.1ºC	Temperature: 0.1ºC; Humidity: 0.1%RH	0.1ºC
Measuring Interval	5 sec
Power Supply	4 pcs AA 1.5V alkaline batteries; USB 5V/2A
Size	109×96×35mm
Weight	About 130g