Linear Multi-code 3089 300 MHz 1-Channel Visor Transmitter (10pcs)
Color: White

Compatible with 300 MHz Multi-Code receivers Supplied with visor clip Easy access to battery and coding switches Power: 9-volt battery Codes: 1,024 (set by dip switches) RF frequency: 300 MHz Dimensions: 2.5" W x 3.75" H x 0.

Model 308911 is a poratble transmitter designed for automatic door & gate operator applications.
Single-channel device, pressing the push button will send a signal to the receiver
Multi-Code format with one 10-position coding switch providing 1,024 possible codes.
The transmitter will only activate receivers set with the same code
Model 308911 is compatible with 300 MHz Multi-Code receivers and machines