Specification：<br /><br />BBI beeps three sections<br />Alarm distance 0 m to 2 m<br />CPU design, reliable performance, simple installation<br />Host and monitor wireless connections<br />Live voice beeping<br />Shows the distance and direction of obstacles<br />LED color bar display<br />4 probe<br /><br />Feature：<br /><br />Rated operating voltage: DC 12V<br />Operating voltage range: DC 10V ~ 15V<br />Working Current: 20mA ~ 500mA<br />Radar detection range: 0.3 ~ 2.0m<br />Ultrasonic Frequency: 38kHz / 40kHz<br />Host Operating temperature: -40 ° C ~ + 85 ° C<br />Buzzer Volume:: 65dB<br />Probe Installation: drilling<br />Probe diameter: 22mm<br />Sound frequency: 1.6-2.0m: 0.5HZ (slow); 1.1-1.5m: 1 HZ (slow); 0.6-1.0m: 3 HZ (rapid); 0-0.4m: sounding<br /><br />Package Included:<br /><br />1 * Digital Display<br />1 * Host<br />1 * 4 probe<br />1 * Power Cord<br />1 * Manual<br /><img src="http://img6.eachbuyer.com/x9/p100/eb04930_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04930_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04930_3.jpg" />