... ) Battery capacity: 500mAh14) Operating humidity: 85% RH15) Operating temperature: -10C ~ +50C / 14F ~ 122F16) Storage temperature: -40C ~ -85C / -40F ~ +185F17 ... : 100m 19) Channel frequency: CH1=2,414; CH2=2,432; CH3=2,450; CH4=2,468 (Mhz)Features:1) Wireless camera ... Specification: 1. 2.4GHz wireless recordable receiver, USB2.0 port.2. 2.414GHz, 2.432GHz, 2.450GHz and 2.468GHz 4 channel receiving ...