It supports maxi 12 monitors. 1 call button for 1 monitor, so you can call directly the room you want. > 7 Inch LCD monitor can receive the video of your visitor.> Doorbell has 380TVL good camera. > Very Easy to install and use; > 2 Way voice talking; > Remotely open your electric door; > LED lights for seeing in the dark! > Connect the camera and receiver with RVV4 lines (not included). Indoor Monitor - Input power: AC 100-240V 50/60Hz - Output power: DC 5V; 1000mAh - Support Color & B/W CMOS & CCD Cameras - Volume/Contrast/Brightness control - Door release, intercom, call other monitors, monitor outside - Audio and video out & 3 Music selectable - Hand free communication - Dimensions: 24 x 15 x 2.3 CM Outdoor Camera - Power: From Monitor, DC15V - Connection: 4 cored wire (Up to 12 monitors) - Camera sensor: 1/3 Color CMOS Camera - Light Source: 6 Infrared LED lights - Visual angle (U/D/L/R, degree): 60/35/70/70 - Camera resolution: 510492(NTSC), 380 Lines - Working Temperature: -13F to 131F (-25C to 55C) - Built-in microphone and speaker - Illumination 0 lux/F1.2 - Infrared length 1m - Case: Metal material, weatherproof - Working power consumption: 3.6W. 20m RVV4 x 0.2 mm.
30m RVV4 x 0.5 mm - 50m RVV4 x 0.75 mm - 100m RVV4 x 1.0 mm Certification: FCC, CE. Indoor monitor x 4 outdoor unit x 1 power adapter x 4 (US/ UK/ EU/ AU chargers for choice) install accessories x 1. The item "Apartment 4 Units Wired Video Door Phone Audio Visual Entry Intercom System 1V4" is in sale since Monday, April 2, 2018.This item is in the category "Home & Garden\Home Improvement\Home Security\Door Entry Systems & Intercoms". The seller is "ohivision2015" and is located in ShenZhen. This item can be shipped worldwide.