The Model DXT-21 2-Button, 1-Channel Handheld Transmitter is a battery powered portable transmitter designed for use with Linear’s DX Format receivers. Each transmitter can be used in a limitless number of wireless remote control applications. Pressing a button on the transmitter sends a digitally coded wireless signal to its companion receiver. The DXT-21 is a two-button, one-code transmitter. Pressing either the round button on the transmitter’s front, or the small button on the transmitter’s top will send the same signal. The digital DX code format features over a million possible codes. The DX transmitters are precoded at the factory to unique codes, so no field coding is required. The multi-button transmitters send variations of their preset codes depending on which buttons are pressed. Transmitters can send a signal for up to 10 seconds per activation. For versatility, any transmitter code can be programmed into any receiver channel. Receivers must be programmed to the transmitter code before system testing and operation. The DXT-21 is powered by two 3-Volt #2032 lithium batteries with an expected battery life of up to 5 years. The red test/operate indicator lights during operation and can be viewed from the front or the top of the unit. The indicator will glow dimly during operation when the batteries get low. It will stop lighting altogether during operation when the batteries are below 4.5 volts. A removable pocket clip and belt clip are provided for each transmitter. Either can be attached to the back of the transmitter allowing the unit to be clipped to shirt pocket or slid onto a belt. The top button on each transmitter can be hidden with the top button cover supplied with each unit.
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Programming is done on the receiver. What receiver do you have?
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