1、Two Wire System: The video doorbell system includes two monitors and one camera. Power, audio, video and control signals are all carried over a two‑wire cable. 2、7in LCD Monitor: 7‑inch color TFT LCD display, no radiation, low power consumption, high definition. Integrated power supply, supports up to 2 external devices and 6 indoor monitors. 3、Easy Operation: 2 locks can be unlocked at the same time to monitor the situation outside the door in real time. Adjustable volume, brightness, contrast, group call/intercom function. 4、Two Way Intercom: When the indoor monitor is connected to your wireless wifi router, you can connect your mobile phone to the indoor monitor, and then the mobile phone can also record video or open the door, etc. 5、Phone Unlock: The indoor monitor can support connecting 8 mobile APP users, support for IOS/for Android system mobile phones, and the mobile phone can be viewed and unlocked. 6、Night Vision: Durable aluminum alloy outdoor unit, anti‑rain and anti‑oxidation, with white LED night vision light, can be clearly displayed at night. 1 x Camera2 x Monitor1 x Power Supply1 x 4 Core Terminal Wire2 x 2.54x2P 2 Core Terminal Wire1 x 2.0x2P 2 Core Terminal Wire2 x Terminal8 x Screw8 x Expansion Tube1 x User Manual Item Type: Intercom Doorbell CameraMaterial: ABS, aluminum alloyUses: Can be used for video doorbells in apartments, villas, hotels, offices, public buildingsOutdoor Camera:Night Light: White LED night vision lightCamera: 1/3in CMOS 1000TV lineViewing Angle: 92°.Minimum Illumination: 0.5LuxVideo Output: 1Vp-p/75ΩConnection Method: BUS 2-wire systemInstallation: Wall MountedOperating Temperature: -30°C to 50°CMonitor:Display Size: 7in TFT LCD (16: 9)Resolution: 1024(H)X600(V)Unlock: Support mobile phone and tablet unlockAdditional Memory: Support for additional memory cards (up to 64GB)Touch: YesWifi: YesConnection Method: BUS 2 wirePower Supply: Input Voltage: AC100-240VOutput Voltage: 24V/ 2.5A