SPECIFICATIONS:- Power: 1 x Lithium battery type CR2032 (3.0V, 220 mAh) (Notice: the battery is not supplied with the product)- Typical battery life: about 2 years- Communication frequency: 868.1 MHz, Jablotron protocol- Transmission distance: up to 200 meters (open field)- Dimensions: 55 x 27 x 16 mm- Operating temperature range: -20 to +60 °C- Measurement accuracy over operating temperature range: +0.1 °C- Complies with: EN 60950-1, EN 50130-4 and EN 55022