This product adopts curve, the appearance is generous and beautiful; the internal circuit design is scientific, adopts SMT chip components, the sound meter resonator stabilizes the frequency, has the characteristics of high stability, low power consumption, etc. Model: AB038 Type: 4-button wireless remote control Rated voltage: DC12 V Rated current: less than equal 12mA Chip: ECA compatible chip Button: A B C D Installation method: handheld Frequency: 433MHZ Colour:black Material:ABS Package Contents: 8x Controller Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.