433.92MHZ Wireless Keypad And Receiver Used For Automatic Door/ Garage/swing/sliding Gate Opener ,Widely Used

433.92MHZ Wireless Keypad and receiver used for Automatic Door/ garage/swing/sliding gate opener This is a dual channel transmitters that are activated only after having entered a Suitable combination. The units are designed for installation in indoor or outdoor locations that ensures the utmost security because the transmitted code is changed at each transmission session. The estimated transmission range is 200M in open space and 35M indoors. The units are designed to ensure battery life equivalent to an estimated 2 years of operation considering 10 transmissions/day.