The Model 414001 4-Channel Visor Transmitter is a portable transmitter designed for automatic door and gate operator applications. 300 MHz remote.

Liftmaster 974LM 4 Button Remote Control Transmitter - Get additional access and security with our 4-button remote control. Use it to open and close 4 garage doors or gates, or as an extra remote to turn interior lights and small appliances on inside your home.

Liftmaster 84LM 4 channel liftmaster remote control featuring private billion code technology. Green LED light indicates battery strength. Fourth channel provides trinary DIP switch coding with 19,683 selections for added security.

The Liftmaster 64LM 4 Button Remote Control Transmitter operates on a 390 MHz Frequency and works on operators from 1984-1992 with 8 or 9 three position dip switch systems. Compatible with Sears Craftsman

Liftmaster 374LM Remote Control Transmitter - Get additional access and security with our 4-button remote control. Use it to open and close 4 garage doors or gates, or as an extra remote to turn interior lights and small appliances on inside your home.

The Linear ACT-34B 4-Channel Block Coded Key Ring Transmitter is designed for use with Linear’s access control products. The Linear ACT-34B is a four-channel device supplied with a quick-disconnect key ring. Also included are lithium batteries with a five-year service life.

Chamberlain Tricode TC4 dual frequency remote control compatible with Multi-Code, Delta and Stanley code formats. Rated at 300MHz and 310MHz. Single red LED indicated transmission.