1、This complete kit includes Three Remote Controllers and Two Receivers. 2、Wireless remote control is equipped with button to open the door, high sensitivity. 3、Exquisite appearance, small and lightweight, excellent touch feeling. 4、Stable signal, outstanding performance, low power consumption, super long service life. 5、Applicable to the control of telescopic door, automatic door, barrier gate, doorbell, access control system, etc. Features: This complete kit includes Three Remote Controllers and Two Receivers. Wireless remote control is equipped with button to open the door, high sensitivity. With slide cover and keyring on the remote control, convenient to operate and simple to carry. Exquisite appearance, small and lightweight, excellent touch feeling. Stable signal, outstanding performance, low power consumption, super long service life. Applicable to the control of telescopic door, automatic door, barrier gate, doorbell, access control system, etc. Specification: Condition: 100% Brand New Material: Metal+ABS Color: As picture shown Remote Controller Size: approx. 63 * 38mm/2.5 * 1.5in Receiver Size: approx. 43 * 32mm/1.7 * 1.2in Working voltage: DC12V/23A Receive frequency: 315MHZ Receive sensitivity: -95DB Working current: less than 10mA Contact output: NO/NC/COM Effective distance: 30 meters Coding method: bonding pad Delay function: No Application: Control of telescopic door, automatic door, barrier gate, doorbell, access control system, etc. Package List: 3 * Remote Controller (Each has One 12V/23A battery) 2 * Receiver