Feature: 1. Indoor Monitor: Handsfree indoor unit, 7in true color TFT screen, clear image, support monitoring, 2 way talk and unlock function. 2. Night Vision Camera: The camera has night vision and intercom function, which is not affected by the weather and day night, you can see the situation outside. 3. Adjustable Parameter: Supports adjustment of screen brightness, color, and ringtone volume, and a variety of ringtones can be freely switched. 4. Simple Installation: Four wire system, video door phone kit is easy and convenient to install, users can install it by themselves, reliable doorbell system. 5. Wide Applications: Video intercom system is suitable for use in other places such as home, office, office building, government agency, etc. Specification: Item Type: Video Door Phone Kit Material: ABS Usage: Suitable for use in other places such as home, office, office building, government agency, etc. Monitor Parameters: Screen: 7in TFT Resolution: 800x480 Power Supply: DC15V/2A Ringtone: 16x4 melody Display Time: Call: 60 Seconds, Monitor: 30 Seconds Number of Connecting Lines: 4 Lines Camera Parameters: Lens: 1/4HD CMOS Light Source: 6 IR LEDs Installation Method: Surface installation of outdoor unit, hands free wall hanging of indoor unit Power Supply: AC100-240V . Package List: 2 x Monitor1 x Camera4 x 4 Core Terminal Wire1 x 2 Core Terminal Wire13 x Screw (12 large, 1 small)12 x Plug2 x Power Adapter1 x Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.