?This is a 7" LCD SY802M Wired Video Door Phone Intercom-2 Monitor 1 CCD Camera Station. When Doorbell is rung£¬ the picture of the visitor will automatically be displayed. You can even communicate with them through intercom system without having to open the door at all. It provides an extra security and convenience for you and your family. The Video Doorbell is very easy to install and take off£¬ electric lock-control function and handfree intercom. Your ideal choice!                                    Features            New and high qualityHands free video door phoneThis door station adopt high - definition CCD camera£¬ making a better effect for imageMonitoring outside by pressing the keyMicro - processing technology£¬ automatic remote control functionality£¬ excellent performance£¬ high reliability£¬ wall or desktop mountingBuilt - in high - capacity rechargeable lithium - ion batteryUSB interface for charging batteryExplosion - proof£¬ waterproof design£¬ prevent - oxidation£¬ wear - resistant metal caseInstallation is simple and convenient£¬ Users can install itself                                                            Specifications            Display Screen    7"TFT (16: 9) mimic board    <br>Resolution    480 x RGB x 234    <br>Visible Area    154.08 (H) x 86.58 (V)    <br>Input Voltage    AC100V - 240V 50Hz / 60Hz    <br>Obput Voltage    DC15V    <br>Output current    1200MA    <br>Calls Delay Time    120S¡À10%    <br>Surveillance Delay Time    60S¡À10%    <br>Effective Distance    50M (4 x 0.65MM2)    <br>Power Consumption    static &lt; 0.5W£¬ calls &lt; 10W    <br>Image Transmission Distance    About 200m    <br>Viewing Angle    92¡ã    <br>Working Temperature    - 10¡æ - + 50¡æ    <br>Relative Temperature    10% - 90% (KH)    <br>Indoor Unit    10.03" x 6.5" x 1.18"    <br>Outdoor Unit    4.96" x 2.05" x 1.30"    <br>Weight    2437g    <br>                                                            Package Includes            2 x Indoor Unit1 x Outdoor Unit2 x DC15V - 1200Ma Switching Power Supply2 x 5ms (long) 4 Core Cable1 x Screw Pack1 x Manual