US Patent 7248144 Barrier operator with secure/unsecure transmitter and method of use

A wireless transmitter used with an operator system controls movement of a barrier between limit positions can be used in an unsecure, single-button actuation mode, or a secure, multiple button actuation mode. The transmitter includes at least two transmitter switches, and a controller connected to the switches. The controller has a first mode of operation, wherein actuation of a single one of the switches generates a wireless signal receivable by the operator system, and a second mode of operation, wherein actuation of the switches in a predetermined sequence generates the wireless signal.