Portable and designed for automatic door and gate operator applications, the Linear/multi-code 2-channel visor transmitter features raised dimples for easy, or vision-impaired identification. The left and right buttons channel signal one and signal two respectively. It is powered by a 9-volt battery, includes a visor clip and a test/operate indicator. The transmitter is multi-code format with two 10-position coding switches, providing 1,024 possible codes per channel. Independent coding supports activation of a common gate and a private door. The transmitter will only activate receivers set with the same code.