Still use old door viewer to recognize and welcome your guests? Go after fashion with this SY801M12 One-to-Two 7" Wired Video Door Phone Doorbell! Delivering easy installation and one-touch operation￡? our wired video door phone doorbell is pretty popular in the hotels￡? offices￡? villas and so on. It provides you with night vision function￡? wide angle￡? stable picture !#!amp!*! voice signal and also supports all kinds of electric locks. Moreover￡? various kinds of interchangeable ringtones are offered for you to choose while ring volume can be adjusted. A reliable and trustworthy protector for all of you!                                    Features            New and high qualityHands free video door phoneThis door station adopts high-definition CCD camera￡? making a better effect for imageYou can monitor outside by pressing the keyMicro-processing technology￡? automatic remote control functionality￡? excellent performance￡? high reliability￡? wall or desktop mountingOne outdoor unit can call to two indoor unitsVarious multi-chord tunes are available with adjustable volumeBuilt-in high-capacity rechargeable lithium-ion batteryUSB interface for charging batteryExplosion-proof￡? waterproof design￡? prevent-oxidation￡? wear-resistant protective caseInstallation is simple and convenient￡? users can install it by themselves                                                            Specifications            Input    AC 100-240V￡? 50/60Hz    <br>Output    DC 15V/1.2A    <br>LCD    7" TFT (16:9 Display)    <br>Valid Area    154.08(H) x 86.58(V)mm    <br>Consumption    Standby: !#!lt!*! 0.5W￡? Work: !#!lt!*! 10W    <br>Calling Duration Time    120S ?à 10%    <br>Monitor Time    60S ?à 10%    <br>Work Temperature    -10??~+50??    <br>Max. Transmitting Distance    200 metres    <br>Resolution    480 x RGB x 234    <br>Valid Distance    50m(4*0.65MM2)    <br>Angle    92degree    <br>Outdoor Unit Dimensions    (12.6 x 5.6 x 3.3) cm / (4.96 x 2.2 x 1.3)" (L x W x H)    <br>Indoor Unit Dimensions    (16.5 x 23.5 x 3.2) cm / (6.5 x 9.25 x 1.26)" (L x W x H)    <br>Total Weight    2385 g / 84.13 oz    <br>                                                            Package Includes            2 x Indoor Unit<br>1 x Outdoor Unit<br>2 x AC Adapter<br>2 x Connection Cable<br>2 x Screws Parts<br>1 x User Manual<br>1 x Mounting Plate<br>