This alarm is suitable for bicycles, electric motors and others. The sound of three gears is adjustable and loud, can effectively reduce theft. It is waterproof and dustproof, easy to install. It is suitable for outdoor application and has the function of asking for help and retrieving.<br/>Features:<br />Detering thieves effectively by 113 dB loud alarm.<br />7 level adjustable sensitivity from gently push to push, suitable for more application.<br />Vehicle search function, easy to find your vehicle by 3 kinds of bells.<br />SOS function, it can sound SOS remind other for help when the accident was happened.<br />Battery low indicate.<br />Suitable for bicycle, motorcycle, electric bile and so on.<br />With strong long-lasting PC housing, it is waterproof and dust-proof, very suitable for outdoor use.<br />Easy to install and use.<br/>Specification:<br />Material: plastics<br />Battery: <br />1.5V, 250mAh (not included)<br />Remote control: 3V, 240mAh<br />Working current: ≤150 mA<br />Working voltage: 4.5V<br />Waterproof rate: IP55<br />Wireless range: open space&#xff1c; 50m<br />Working frequency: 433.932 ± 75KHz MHz<br />Working temperature: -40~60℃<br />Storage temperature: -30~70℃<br />Humidity: 0~80&#xff05;<br />Item weight: 100g / 3.5ounce<br />Package size: 115 * 95 * 30mm / 4.5 * 3.7 * 1.2in<br />Package weight: 130g / 4.6ounce<br/>Package List:<br />1 * Host<br />1 * Remote Control<br />