Amperes TD6240 is 24 channel zone decoder meant for Amperes PD series of paging microphones, decoding the data for switching of zone selectors. They can be stacked for larger setup of up to 254 zones.

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Zone triggering with ZS zone selectors are through Cat 5e cables provided.  Each TD6240 has 3 circuits for PD connections, and with each circuit, multiple paging console can be looped, enable multi point paging system.