The product contains an internal transformer. The temperature control range is from -40 degree celsius to 40 degree celsius. It can be acted as a defrosting temperature controller.

One kind of thermometer together with hygrometerMeasure temperature and humidityLarge LCD displayMin/max temperature and humidity memoryComfort temperature and humidity displaySuitable for household a

European modelElegant appearanceIndoor and outdoor temperature displayClock functionMeasuring range: -50 to +70 degree celsiusResolution:0.1 degree celsiusAccuracy: + or - 1 degree celsiusPower:1.5V b

* one external temperature sensor and one internal humidity sensor* very easy to use and highly accurate* output charts and graphs are available* temperature measuring range: -40 to +150 deg cel* accu

* one external sensor* very easy to use and highly accurate* output charts and graphs are available* temperature measuring range: -40 to +150 deg cel* accuracy:0.5 deg cel* capacity:30,000 data* time

Small sizeFashionable appearanceLCD displaySuitable for hvac and aquarium market, etc.Measuring range: - 50 to + 70 degree celsiusResolution: >-20 degree celsius is 0.1 degree celsiusAccuracy: + or -

* set-point range:5 to 35 deg cel* switch current rating* sensing element: Ntc* 7 day programmable* cool, heat and ventilation* large and easy to read display* blue backlightOther programmable thermos

Arched panel, good appearance, LCD display, clock with calender, measuring temperature and humidity, max/min temperature memory, exchange between centigrade and fahrenheitMeasuring range: Temperature

The functions of this thermostats are very similar to that of honeywell room thermostats.Other thermostats are available.Oem is very welcome.