Condition: 100% Brand New Item Type: Doorbell Color: Shown as Picture Material: ABS Outdoor Camera: Working Frequency: 2420 - 2483.5mhz Transmit Power: 18 - 20dbm Camera: 1 / 4in CMOS Working Current: 300mA Standby Current: 20 - 30mA Battery: Rechargeable Lithium Battery (included) Battery Capacity: 1800mah Standby Time: 2 Months Adapter Input: AC100 - 240V, 50 / 60hz Adapter Output: DC5V / 1A Indoor Monitor: Screen: 2.5-inch TFT Lcd Sensitivity: 90dbm Working Current: 250mA Standby Current: 20-30mA / 3.7V Battery: Rechargeable Lithium Battery Battery Capacity: 1800mah Standby Time: 120h Adapter Input: AC100 - 240V, 50 / 60hz Adapter Output: DC5V/ 1A Working Temperature: -20- + 50 Degrees Celsius Working Humidity: Less Than 85% 1、2.4GHz transmission frequency, about 300 meters /984.3ft of barrier-free remote control distance. 2、With the help of micro-processing technology, automatic remote control, excellent performance and high reliability. 3、2.5-inch TFT color display. 0.3 Mega pixel camera, does not support taking pictures and videos. 4、Clear night vision, speaking and unlocking etc. 5、Can be charged with USB, the external unit can be used for about 2 months on a single charge, and the internal unit can be moved. When the intercom and no power, put it back to the base. 6、Lithium battery rechargeable through a small charger. 7、The monitor can be hung on the wall, on the cabinet, or placed on the table. 1 x Indoor Unit 1 x Outdoor Unit 2 x Power 1 x Charging Base 1 x Installation Kit 1 x Instruction