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This plug-in photoelectric smoke detector operates on a 12/24V non-polarized nominal voltage
Maintenance-Free Design: When paired with a Sure-Flex Plus sleeve
sluggish response to temperature changes
What causes a DSI system to go into lockout
ZoneFirst MSS Damper Actuator Els PW 17895 This plug-in photoelectric smoke detectorThe ZoneFirst MSS Damper Actuator is a 24VAC spring return damper motor engineered for direct replacement of legacy MSR damper motor, MCS 3, MCSR, RDM, and RDMH models. Specifically designed for professional grade HVAC zoning systems, this 2 wire actuator provides silent operation with a patented air brake system that prevents the slamming and gear noise common in standard spring return units. The direct drive actuator powers the damper to the closed
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