Mircom PR-300 Polarity Reversal and City Tie Module

The Mircom PR-300 is a polarity reversal and city tie module that adds supervised City Tie and polarity reversal signaling to compatible Mircom fire alarm systems. It provides a supervised 24 VDC city tie output, supports polarity reversal signaling for alarm transmission, and allows programmable behavior for signal silence and AC power fail delay handling. Key Specifications: Type: Polarity reversal and city tie module Core Function(s): Provides supervised City Tie and polarity reversal connections for alarm and trouble transmission City Tie Output: 24 VDC, 200 mA max Polarity Reversal Output: 24 VDC open circuit, 8 mA max shorted Power Consumption: 35 mA standby, 300 mA alarm Mounting: Occupies one module slot Programmable Functions: Alarm transmit can turn off during signal silence for manual City Tie box reset; trouble transmit can delay AC power fail by 0, 1, 2, or 3 hours when it is the only system trouble System Compatibility: For compatible Mircom fire alarm control systems that support the PR-300 module