Specifications- Power: 4 alkaline pilhas AA 1.5 V- Duration: about 1 year- Communication protocol: Bidirectional jablotron 868 MHz- Radio coverage: I reached 200 meters- Dimensions: 102 × 151 × 33 mm- Grau de Segurança: grau 2, EN 50131-1, EN 50131-3, EN 50131-6- Internal use according to EN 50131-1, EN 50131-3: II,- Operating Temperature: -10 to 40 ° C