?Are you feel afraid when you stay at home alone£¬ especially at night? Maybe you are badly in need of a reliable house monitor to keep personal and property security. You should have a try of this YA-MC02 High Sensitivity Home Security Surveillance GSM Alarm System Door Intrusion Alarm. It functions once the door or window is being illegally opened or moved. Built-in GSM system£¬ it will response rapidly once it receives a tiny signal. This alarm£¬ with superior plastic material£¬ is lightweight yet durable to use. Also£¬ it is easy for installation and operation. You might as well place this device in any corner of your house. Forewarning will help you a lot!                                    Features             SMT placement process and CUP intelligent control ensure its high quality<br> Corrosion resistant£¬ wear resistant£¬ high sensitivity and stable performance<br> Easy to install and operate<br> Once the door or window is being illegally opened or moved£¬ it will give the alarm to warn you<br> Adopt high-tech GSM alarm system<br> It keeps long-lasting standby time<br> It is mainly used for detecting windows£¬ doors£¬ drawers etc.<br> A must-have for keep personal and property securit     <br>                                                            Specifications            Material    Plastic    <br>Record Time    10 Seconds    <br>Color    White    <br>Phone Number Stored    6    <br>Operating Voltage    DC 12V (Single 23A 12V Battery)    <br>Quiescent Current    &lt;10uA    <br>Transmission Frequency    433MHZ    <br>Transmitting Distance    ¡Ý100 Meters (Open Distance)    <br>Magnetic Detection Range    25-35mm    <br>Wireless Encoding Format    Compatible PT2262 / EV1527    <br>Dimensions    (2.48 x 1.97 x 0.59)" / (6.3 x 5 x 1.5)cm (L x W x H)    <br>Weight    1.48oz / 42g    <br>                                                            Package Includes            1 x Alarm<br>1 x Battery<br>1 x Two-sided Touch Pad<br>