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Eliminates problems sometimes encountered with 433 mHz due to interference from other transmissions.
"Motion" technology. Transmitter emits a series of pulses for 15 seconds when operated ensuring that the receiver gets the signal as soon a it comes within range. Subsequent pulses in the signal are ignored.
2 or 4 button Transmitters can be added with extreme ease by simply touching the new one to an existing one and pressing both buttons simultaneously.
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