Main processor: high performance ARM9 embedded microprocessor; Operating system: embedded Linux OS; Min. Illumination: 0.3LUX/F1.2; IR-Cut: Built-in IR Cut with self-check function double optical fliter automatic switch no color deviation indoor or outdoor; Video call: free video call camera to camera or Android iOS mobile terminal device to camera; Audio input / output: built-in microphone or an external headset; Alarm input: support learning wireless detector alarming input (up to 4+4 channel); Alarm triggered: motion detection alarm whistle alarm Email alarm phone push alarm; 2 x 18650 lithium batteries included up to 10 hours of stand-by time; Working temperature: 0~55'C; Working humidity: 10%~90%