1. An aluminum foil antenna， covering the full range of car reversing region， no dead ends.<br />2. No need drilling， ease to install， the antenna can be attached to the inside of the rear bumper， not affecting the car external appearance.<br />3. Electromagnetic induction， three sections alarm according to the detection distance， humanized design.<br />4. Buzzer alarm， safe and reliable.<br />5. Sensing range within 2.7 m<br />Note: The product can highly sense human body and metal， but for natural elements ( such as stones， trees )， the sensing capability is weak.<br />Color: black<br />Material: ABS<br />Package size: about 18 x 14.3 x 4.2cm<br />Host size: about 58.4 x 35 x 17.2mm<br />Speaker size: about 48 x 30 x 16mm<br />Speaker cable length: about 2.48m<br />Power cord length: about 1.48m<br />Sensor antenna length: about 2.3m<br />Basic parameters :<br />1. Operating voltage: DC 12V<br />2. Comes with buzzer<br />3. Easy to install<br />4. Applicable models: universal<br />1 x Host<br />1 x Alarming horn<br />1 x Sensor antenna <br />1 bag x Mounting kit ( 2 ties， 2 velcro， 1 washers) <br />1 x English user manual<br />In original package<br /><img src="http://img6.eachbuyer.com/x23/p71/bt634_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p71/bt634_7.jpg" />