Features and specifications: 1) Adopts original microchip components imported from the USA 2) Effective remote distance: 100m 3) Intelligent anti-theft design 4) Automatic door locking 5) Bright LED emergency signal light 6) Slim and watertight construction 7) Low power consumption battery with extended life 8) Alarm reminding when door is not properly closed 9) Emergency helping 10) Trunk remote opening 11) Anti-robbery cut off engine 12) Ultrasonic sensor optional Inner packing: Dimensions: 24 x 18.5 x 8.5cm N.W.: 1.3kg G.W.: 1.4kg Outer packing: 12pcs/ctn Dimensions: 51 x 39 x 29cm N.W.: 14kg G.W.: 15kg