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I want to physically wire a Deltabell to a Pyronix HomeControl+ wireless alarm. Hopefully the attached picture is not too far off the mark. I think the 2K2 resistor is not relevant if it's just an ordinary input of type Tamper. I'm assuming PGM can drive Engineer Holdoff, and STB->STB, BELL->BELL is a wild guess :). Where I'm most unsure is what type to make the three outputs. Are STB and BELL already "pre-programmed" in that fixed function?. For PGM driving holdoff, I have read here to make the output of type Engineer Access. Looking at the output type table I find 0059 : Engineer Access Active : When entering Engineer mode. Restore : When leaving Engineer mode So far, OK, but the text above the table says: Polarity of the PGMs: The polarity of the outputs are normally switched negative, i.e. normal status OFF = 0v and in active status ON = 12v. NOTE: The PGM Outputs polarity cannot be inverted. So it sounds to me like setting PGM as type 59 and wiring it to the deltabell holdoff, holdoff will go to 12V when in engineering mode and the PGM output is active. This is the opposite of what we want, isn't it. Ie, you should take holdoff to 0V to inhibit the bell, not set it to 12V. Any thoughts please? If I want to drive two deltabells, can I parallel up all except tamper, and wire that from D1- to T1 on the first bell, out of T2 on the first bell into T1 on the second bell, and out of T2 on the second bell into Z33 input?. T1 one the first bell will be linked to 0V on the first bell. Batt/PSU is a 9Ahr 12V battery backed 3Amp PSU/charger, in a metal box like RGL and others supply. Bee
