A dual input module connects to waterflow contact number one, waterflow contact number two, and a tamper contact with forty-seven kilo-ohm end-of-line resistors. The waterflow bell operates on twenty-four volts direct current from a fire alarm control panel or booster power supply with polarity sensitivity. Data input and output lines connect to the module while red and green light-emitting diodes indicate alarm or active and normal status respectively. Contact ratings are specified as zero point five amperes at one hundred twenty volts alternating current and two point zero amperes at twenty-four volts direct current.
CONTACT #2 WATERFLOW RED LED (ALARM/ACTIVE) DATA IN (-) DATA IN (+) EOLR 47K TAMPER CONTACT 0.5 Amp @ 120VAC 2.0 Amp @ 24VDC CONTACT RATING: EOLR 47K (NORMAL) GREEN LED DATA OUT (-) DATA OUT (+) CONTACT #1 WATERFLOW NOTE: POLARITY + - + - + - SENSITIVE BELL WATERFLOW 24VDC FACP OR BPS
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