thermal hygrometer

- Hygrometer with max/min and alarm functions. - Range from -49.9 to 69.9°C and 20 to 99% RH. - Built-in % RH and remote temperature sensor. - Temperature alarm function. - Instruction manual - Certificate of conformity This therma-hygrometer simultaneously displays humidity and temperature in addition to indicating and recording maximum and minimum readings. The thermo-hygrometer measures both humidity and temperature over a range of 0-49.9°C and 20-99% RH using the internal sensors. By using the external temperature sensor, the temperature range is extended from -49.9 to 69.9°C. Therma-hygrometer has a temperature alert alarm that keeps on when the external remote temperature probe indicates the temperature is 0°C or below. This function is ideal for frost warning, horticulture and the like. The therma-hygrometer is housed in an ABS case measuring 20 x 65 x 97mm, the case includes a useful fold-out stand and a keyhole slot for hanging on the wall. Internal range: temperature: 0 to 49.9°C - humidity: 20 to 99% RH External range: temperature: -49.9 to 69.9°C Resolution - temperature: 0.1°C / °F Resolution - humidity: 1% RH Accuracy - temperature: ± 1°C Accuracy - humidity: ± 5% RH Battery: 1.5 volt AAA Autonomy: 10000 hours Sensor type: temperature: thermistor - humidity: capacitance Display: custom dual LCD Dimensions: 20x65x97mm Weight: 70 grams Housing material: ABS plastic Warranty: one year Measurement scale: Celsius / Fahrenheit & % RH