System Sensor 1151EIS Explosion-Proof Ion Smoke Detector

System Sensor's 1151EIS Explosion-Proof Ion Smoke Detector is an intrinsically safe ionization smoke detector head designed for hazardous-location installations. As part of System Sensor's 100 Series low-profile plug‑in family, the 1151EIS is built for use in environments with explosive atmospheres and mounts on compatible detector bases to provide early smoke detection integrated with a conventional fire alarm system. It uses an ionization sensing chamber to monitor for smoke particles and triggers an alarm when smoke alters ion flow, delivering rapid indication of a developing fire. The EIS designation signals a combination of explosion-proof construction and intrinsic safety, enabling safe operation in environments where ignition sources must be mitigated while preserving standard system integration. A built-in status indicator allows on-site confirmation of standby and alarm states, and the detector is designed for straightforward replacement as a plug‑in head on its base. Typical applications include industrial facilities such as chemical plants, refineries, and other operations handling flammable materials where reliable early detection of smoke is critical.