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System Sensor 2D51 Photoelectronic Low-Profile Plug-In Detector for Special Applications
out-of-sensitivity
System Sensor DNR intelligent non-relay photoelectric duct smoke detectors and DNRW water-tight non-relay photoelectric duct smoke detectors feature a pivoting housing that fit both square and rectangular footprints capable of mounting to a round or rectangular duct
Use direct replacement SPSRL
System Sensor B224RB-IV Intelligent Relay Base
Thermotech 302-EPM-135 Rate-Anticipation Heat Detector 135°F BG-12LX System Sensor 2D51 Photoelectronic Low-ProfileThermotech 302 EPM 135 135F Rate Anticipation Heat Detector, 40' 40' UL, Explosion Proof Mounting
US$ 167.00
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