M-Cab MW08. Device interface: RF Wireless, Movement detection technology: Optical, Purpose: office. Frequency range: 2.4 GHz, Wireless range: 8 m. Wireless receiver interface: USB, Receiver type: nano. Power source: batteries, Battery technology: Alkaline, Battery type: AA. Operating temperature range (T-T): 0 - 60 °C, Operating relative humidity range: 10 - 90 %