2WB Smoke Detector Replacement for System Sensor 2100, 2100D, 2100S and 2400 Detection: Photoelectric Wiring: 2-wire Operating Voltage: 12/24 V non-polarized nominal, 8.5 min. to 35 max. Maximum Ripple Voltage: 30% of nominal (peak to peak) Alarm Current: 130mA max., limited by panel ...
2WTRB Smoke Detector w/ Thermal & Relay Replacement For System Sensor 2100TR Detection: Photoelectric Wiring: 2-wire Heat Sensor: 135°F (57.2°C) fixed Operating Voltage: 12/24 V non-polarized nominal, 8.5 min. to 35 max. Maximum Ripple Voltage: 30% of applied voltage (peak to peak) Alarm Current: ...