Bosch Reverse Polarity Signaling Module, D185

Product Highlights

• UL Listed for NFPA 72 remote station applications

• Adjustable alarm and supervisory output current

• Alarm activation delay

• System test mode with LED indicator

• Easy installation

Product Details

The D185 Reverse Polarity Signaling Module communicates system conditions (alarm, trouble, and supervisory) from a compatible control panel to a monitoring station by reversing or interrupting the polarity of a steady signal it sends over leased telephone company (telco) lines. The module operates over one or two pairs of lines and with either a 12 VDC or 24 VDC supply. All circuits are power limited.

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