Video door phone set including wireless control, a 3.5 inch monitor, a high quality night vision camera, touch panel control for a super value vs cost home security system.At a Glance...Video door phone set for adding safety and convenience to your home or property Wireless view, talk to, and open the door for visitors Portable 3.5 inch portable monitor 420TV line camera with LED night vision Touch button control over monitor and cameraManufacturer SpecificationsMonitor Screen Size: 3.5 inch (16:9) Touch Button Control Build-in 16 chord melodies Working current: 250mA Battery: Rechargeable 1400maH lithium battery Standby time: 120 hours Adapter input: AC100~240V, 50/60Hz .Adapter output: DC5V/1A Standby current: 20-30mA/3.7V Working temperature: -20degree- +50degreeDoor Camera Image Sensor: 1/4 Inch CMOS Resolution: 420TV Lines Night Vision: x6 LED Transmission Type: 2.4GHz Working rate: 2402~2483.5MHz Transmitting power: 16~20dBM Transmission range: 250 meters without obstructions / 10 meters with 2 barrier concrete walls Battery: 1320maH Rechargeable lithium battery Standby time: 2 month Adapter input: AC100~240V, 50/60Hz Adapter output: DC5V/1A Standby current: 20~30mA Working current: 300mAOutside Camera Dimensions: 165x110x45mm (L X W X D) Outside Camera Product Weight: 320gm Inside Monitor Dimensions: 84x139x19mm (L X W X D) Inside Monitor Product Weight: 144gmPackage Contents 3.5 Inch Monitor Door Camera x2 Power Adpater USB Cable Cable Screws x2 Battery User Manual