Piranha Nano R Type. Device interface: RF Wireless, Purpose: PC/server, Recommended usage: Office. Frequency band: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB, Receiver type: nano. Power source type: Battery, Battery type: AAA. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 20 - 90 %