Specification: Name: 11 keys long bright square control car steering wheel remote control Material: rubber Size: 12.3*3.3*4.7CM Model: High-end configuration (intelligent backlight) Lighting: backlight automatically light up at night Adaptive: 98% of the modified navigation on the market can be used Transmission mode: high-frequency encrypted signal + receiver Working voltage: 12V car)-24V (truck) Battery: lithium battery Installation: Non-destructive mounting on the card, can be installed in any steering wheel position, can be applied more No need to paste: prevent the paste from warping, deforming and falling off under high and low temperatures No need to cut holes: non-destructive installation is quick and easy, will not damage the original steering wheel Includes 2 batteries and a Micro USB cable for charging the remote control with batteries and charging the batteries separately. The module has 5 wires that Green (ANT) antenna is not connected to anything Red (ACC) connects to the DVD navigation ACC power cable Black (GND) connects to the DVD navigation cable White (Kay12) connects to DVD navigation side control harness (AD12, SW12) Note: If Kay 2 only, then both white wires of the module are twisted together with the radio. Business scope: car, van, van, electric car, large screen, small screen, universal machine navigation Package Includes: 1 * steering wheel controls 1*Universal wiring harness 1*USB harness