1) Double CPU? LCD showing obstacle distance  <br><br>2) Self-test function <br><br>3) BiBiBi/Dang/Dang/Dang or Voice indicator <br><br>4) Insert in and stick on sensors for option <br><br>5) All kinds of sensor colors and styles are available  <br><br>6) Voice on/off optional  <br><br>7) High quality and easy to install  <br><br>8) 1-4 sensors are available  <br><br>**Technical Parameters:  <br><br>1) Rated Voltage: 12V DC  <br><br>2) Rated Current: 20mA-200mA  <br><br>3) Detecting Distance: 0- 2.5m  <br><br>4) Ultrasonic Frequency: 40KHz  <br><br>5) Display Working Temperature: -30 - 70? <div class="params_begin">Specification:</div><div class="params_group"><table border="0" class="params_group_table">  <tr>	<td class="params_group_name">			Package Weight		</td>	<td class="params_props">			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">One Package Weight</td>			<td class="params_value">				0.87kgs / 1.92lb			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Qty per Carton</td>			<td class="params_value">				20			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Weight</td>			<td class="params_value">				11.60kgs / 25.57lb			</td>					</tr>		  </table>		</div>			<div class="params_prop last_prop">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Size</td>			<td class="params_value">				32cm * 42cm * 52cm / 12.6inch * 16.54inch * 20.47inch			</td>					</tr>		  </table>		</div>		</td>  </tr></table></div><div class="params_end"></div> <p>&nbsp;<img src="https://lh3.googleusercontent.com/-oYp3-Nj18a0/Vzl4ATG8byI/AAAAAAAAiB0/flsa52IW_io-CXISwM-o_wO6Gth2NbbmgCCo/s829/sg%2Bback.jpg" alt="" /></p>