SD Format Standard Digital Wireless

The Model ET-2 Miniature Transmitter is a battery powered, portable, miniature pendant transmitter designed for use with Linear’s Standard Digital Format receivers. The transmitter can be used in a limitless number of wireless remote control applications. Pressing the button on the transmitter sends a digitally coded wireless signal to its companion receiver.

The ET-2 is a one-button, one-code transmitter. The transmitter button has a positive click feel. Press the button for a minimum of two seconds to insure receiver activation.

The Model D-4B 4-Channel, 4-Button Handheld Transmitter is a four-channel transmitter that can initiate four separate functions. It is used in many remote switching applications where a portable four-channel transmitter is required. The first two digits of the digital code sent will be off or on depending on which transmitter button is pressed. Each transmission causes the red LED indicator on the front of the transmitter to light, showing that the transmitter is sending a signal and that the battery is in good condition.

The Model D-22C 2-Channel, 2-Button Independent Code Transmitter is a two-channel transmitter that can initiate two separate functions. The transmitter contains two eight-position digital coding switches. Each pushbutton can send any one of the 256 digital codes. This transmitter is used in remote switching applications where a portable two-channel transmitter is required and two separate receivers, each programmed with their own digital code, are used.

The Model D-22A 1-Channel, 1-Button Handheld Transmitter is a single-channel transmitter normally used as a "panic button" in security systems. It is also used in many remote switching applications where a portable transmitter is required. Each transmission causes the red LED indicator on the front of the transmitter to light, showing that the transmitter is sending a signal and that the battery is in good condition.

The Model D-24A Normally Closed Wall-mount Transmitter has a normally closed input circuit that operates in conjunction with an externally mounted normally closed magnetic or mechanical contact, window foil, or security screens. When the external circuit opens for at least one-second, the transmitter automatically transmits a two-second digitally coded signal to a companion standard digital receiver. Pressing the test pushbutton on the front of the transmitter will also cause the transmitter to send a signal.