anaglyph Posted June 1, 2009 Share Posted June 1, 2009 Hi, I bought an Optima Compact Gen4 over two months ago. Since then I have been trying to connect it to a bell box from another manufacturer without success. Honeywell technical support simply say that I MUST buy their Reson8 siren! The bell box model is Mars 2000, the instructions and circuitry are attached. I have tried numerous combinations of the panel's A/D/B terminals to the bell's H-/H+/SO terminals but the bell is never triggered by the panel. I know that the bell works because I can manually trigger it by changing the voltage on H+ or H-. Any tips before I give in and buy the Reson8? Thanks... Quote Link to comment Share on other sites More sharing options...
Secware_Tech6 Posted June 4, 2009 Share Posted June 4, 2009 13.8+ = D 13.8- = A H- = no connection H+ = B SO = Strobe - LB = No Connection T = T You may need a relay for this sounder to be compatible for this panel Basically this sounder is an old style SCB You may need a pull up resistor. If that configuration doesnt work then connect a 1K resistor between B on the panel and D Alternativly you will need a relay to clean switch the voltage req. Support Quote Link to comment Share on other sites More sharing options...
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