Check the listing for details. Linear MCS308301 MultiCode 300MHz 2-Channel Key Ring Remote Control Transmitter. Condition: New. Listed at 31.43 USD. Linear MCS308301 MultiCode 300MHz 2-Channel Key Ring Remote Control Transmitter Linear MCS308301 MultiCode 300MHz 2-Channel Key Ring Remote Control Transmitter The Model 308301 2-Channel Key Ring Transmitter is a miniature style 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. The transmitter has a red test/operate indicator and is powered by a 12-volt battery. A molded-in hole in the case is for attaching the transmitter to a key ring. 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 308301 is compatible with 300 MHz Multi-Code receivers and Model 109950 and 302850 receivers.Compatible with 300 MHz Multi-Code receiversEasy access to battery and coding switchesPower: 12-volt batteryCodes: 1,024 codes for each channel (set by dip switches)RF frequency: 300 MHzDimensions: 1.5" W x 2.5" H x 0.625" D Payments & Returns Policy