Electric lock-control function. Hand-free intercom. Mute indoor intercom function. Monitoring the outside of the door. 16 kinds of door bell rings. Volume, brightness and contrast adjustable. Easy installation by yourself with adapter and cable we provide in this kit. Specifications： Outdoor Camera Camera: 1/4" CMOS Material: Aluminum alloy Min. Illumination: 0.5Lux Video output: 1Vp-p/75Ω Power: DC15V-1.2A Dimensions: 12.7 * 8 * 3.4cm Monitor Screen: 7" TFT/LCD Material: ABS plastic & aluminum alloy Power source: AC100V-240V / 50-60Hz Effective pixels: 480 * 234 * 30 Power: ≤14W(operation), ≤2W(standby) Wiring: 4 wires Dimensions: 26 * 16.5 * 3.2cm Adapter input: AC100~240V, 50/60Hz Adapter output: DC15V 2000mA Package size: 36.5 * 28 * 10cm Package weight: 2743g Package includes: 1 * Outdoor camera 2 * Indoor monitor 2 * AC adapter 1 * 5m 5-core Connection cable 1 * Package of screws 1 * User manual - English Please note: The cable only 5M for standard. If need longer, please purchase locally.