433.92MHZ Wireless Keypad & Receiver for Automatic Door / Garage / Swing / Sliding Gate Opener - Dual-Channel, Smart WiFi Control

433.92MHZ wireless keypad and receiver kit for use with automatic doors, garage doors and swing or sliding gate openers. The system uses dual channel transmitters that only send commands after the correct combination is entered, providing controlled access. Designed for both indoor and outdoor installation, the unit enhances security by changing the transmitted code on every transmission session (rolling code). Estimated transmission range: 200M in open space and 35M indoors. Battery life is estimated at 2 years based on 10 transmissions/day.