The Model 109410 2-Channel Visor Transmitter is a portable transmitter designed for automatic door and gate operator applications. This transmitter is a two-channel device. Pressing the left button on the transmitter will send a channel one signal. Pressing the right button on the transmitter will send a channel two signal. The buttons feature raised dimples for easy, or vision-impaired identification. A visor clip is included. The transmitter is powered by a 9-volt battery and has a test/operate indicator. The transmitter is Multi-Code format with two 10-position coding switches providing 1,024 possible codes for each channel. Independent coding supports activation of a common gate and a private door. The transmitter will only activate receivers set with the same code. The Model 109410 is compatible with 310 MHz Stanley receivers and Model 109950, 302850, and 309013 receivers.