Siemens HFPT-11 (500-033380) Plug-In Two-Wire Thermal Detector VSP-005 These products are electrically backward

These products are electrically backward compatible with the previous generation of SpectrAlert notification appliances

It also has effective filtration and optical protection with clean air barriers to ensure lifetime detection performance

Series: i3 Series

System Sensor SPCWL L-Series

System Sensor F-A3384-000 Air Filter Aspirating Detector

Siemens HFPT-11 (500-033380) Plug-In Two-Wire Thermal Detector VSP-005 These products are electrically backwardSiemens HFPT 11 (500 033380) Plug In Two Wire Thermal Detector is compatible with FireFinder XLS and FS 250 control panel families (Replaced by OH921) The HFPT 11 features a microprocessor chip and highly stable solid state electronic circuitry technology.