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    Wiring problem OptimaXL4 and Reson8external box

    I have bought a Reson8 alarm box to replace an old one because it had good reviews and says it "can be connected to any intruder panel.". My problem is there are 6 wires from the control panel bell + -, strobe + -, and two tamper wires. The external box only shows 5 connections, Bell +-...