1、Two Wire System: The premium video doorbell system adopts two wire design, only needs two wires, and the power, audio, video and control signals are all transmitted by the two wire cable. 2、7in LCD Display: Using the integrated power supply, supports up to 2 external devices and 6 indoor monitors. Comes with a 7in color TFT LCD display, no radiation, low power consumption, high definition. 3、Excellent Performance: The indoor monitor can support connecting 8 mobile APP users, support for IOS or for Android system mobile phones, and then the mobile phone can be used to view and unlock. 4、Multifunction: 2 locks can be unlocked at the same time, hands free intercom, mute indoor intercom function, real time monitoring of the situation outside the door, adjustable volume, brightness, contrast, group call and intercom function. 5、Phone Control: When the indoor monitor is connected to your wireless WIFI router, you can connect the mobile phone to the indoor monitor, and then the mobile phone can also record video or open the door, etc. Item Type: Video Doorbell System Material: ABS + Aluminum Alloy Uses: Apartments, villas, hotels, offices, public buildings, etc. Outdoor Camera Night Light: White LED night vision light Camera: 1/3in CMOS 1000TV cable Viewing Angle: 92° Minimum Illumination: 0.5Lux Video Output: 1Vp-p/75Ω Connection Method: BUS 2-wire system Installation: Wall Mounted Operating Temperature: -30℃ to 50℃ Monitor Display Size: 7in TFT LCD (16:9) Resolution: 1024(H)X600(V) Unlock: Support mobile phone and tablet unlock Additional Memory: Support additional memory card (maximum 64GB, not included) Touch: Yes WIFI: Yes Connection Method: BUS 2 wire Power parameters: Input Voltage: AC100-240V Output Voltage: 24V/2.5A 1 x Camera 1 x Monitor 1 x DC24V 2.5A Power Supply 1 x 4 Pin Connection Lock Terminal Wire 2 x 2.54x2P 2 Core Connecting Terminal Line 1 x 2.0x2P 2 Core Connecting Terminal Line 2 x Terminal 8 x Screw 8 x Expansion Tube 1 x User Manual