... - Unlock Door, View Monitor. Talk Button, MIC, LED Indicator, Mini USB Input, Speaker, Volume -/+, Brightness control -/+, Antenna, Power ON ... - Camera Sensor - CMOS - Light Source - Six (7) Infrared LED lights - Power Source - AC Adapter (100-240V) 50/60Hz - ... .4GHz -- Onboard Buttons/Indicators -Microphone, Call button , Speaker, USB interface for charge , Power switch , ‘Pairing’ button, Indicating ...