Inca IWM-230R. Device interface: RF Wireless, Movement detection technology: Optical, Purpose: Office. Frequency band: 2.4 GHz, Wireless range: 15 m. Wireless receiver interface: USB, Receiver type: nano. Power source: Batteries, Battery type: AAA. Compatible operating systems: Microsoft Windows 2000/Windows XP/Windows Vista/ Windows 7, Mac OS 10.0+