?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-MC01 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             New and 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> Working Voltage     12V    <br> Working Current     1A (Max.)    <br> Record Time     10 Seconds    <br> Color     White    <br> Phone Number Stored     6    <br> Power Supply     1 x 23A 12V Battery    <br> Dimensions     (2.76 x 1.89 x 0.67)" / (7 x 4.8 x 1.7)cm (L x W x H)    <br> Weight     1.59oz / 45g     <br>                                                             Package Includes            1 x Alarm<br>1 x Two-sided Touch Pad<br>1 x Battery<br>