Bluetooth® Low Energy wireless wall transmitter 4-channel, AS series, white 4-channel including mounting plate, adhesive film and fastening screws Smart light switch for wireless remote control of devices via the Bluetooth® Low Energy (BLE) wireless standard For switching, dimming and controlling individual lighting scenes Installation on device box with dimensions according to DIN 49073, screw fastening on walls or adhesive mounting on smooth surfaces (glass panes) Battery-free device without external power supply Transmission energy is generated from mechanical energy when actuated (energy harvesting) Encrypted transmission with AES-128 (CBC mode) and sequence counter Compatible with the wireless Bluetooth® systems: Casambi, XICATO Controls, Häfele Connect, WiSilica, Wirepas, Blu2Light (Vossloh Schwabe), Aruba, Fulham, Helvar Configuration interface: NFC Forum Type 2 Tag (ISO/IEC 14443 Part 2 + 3) Depending on the system, the range is automatically extended via mains-powered BT mesh devices Radio frequency: 2.402 ... 2.480 GHz Transmission range in the open field: up to 75 m in buildings: approx. 10 m Transmission power: 0.4 dBm / 1.1 mW Ambient temperature: 5 ... +45 °C Storage/transport temperature: 25 ... +65 °C Humidity: 0 ... 95 % (no condensation)