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What makes your switches unique?

Echoflex switches and sensors are battery-free wireless transmitters. Each switch or sensor transmits a unique (32 bit) code... and no two are the same. As transmitters, all these devices do is "talk", they cannot listen or receive telegrams from other devices.

Each telegram sent from the transmitter has the unique code so only those controllers that have the transmitter "linked" to it will respond to the action.