Can simultaneously learn fixed and rolling codes for 433.92MHz remote controls, compatible with various wireless receivers on the market. Two receiver channels allow control of two automatic door or alarm systems at the same time. Capable of storing up to 400 remote controls, suitable for large communities using custom remote controls. Simple connection to the control panel with only four wires required between the receiver and the control panel. Three operating modes available: Instant, Toggle, and Lock, with two voltage options of AC 85-250V. This universal smart garage door receiver controller is designed for seamless integration with Alexa, Echo, and Google Home. It operates within a wide temperature range of -40℃ to +80℃ and features a built-in antenna with a reception distance of 10-50 meters, ensuring reliable performance in various environments. Color: Black Material: ABS Package Contents: 1* Garage Door Opener Receiver Controller Only the above package content, other products are not included. Note: Light reflection 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.