The 9RCT433 & 9DRCR433 transmitters and receivers are compatible with multiple automatic door remote applications with delay or no delay programming. The transmitters and receivers operate securely with a unique rolling code each time the switch is activated. The RCI transmitters and receivers are designed for operator flexibility and control. 100 transmitters can be programmed into a single receiver and up to four separate wireless receivers can be activated by a single transmitter.