SOC-E-IS Intrinsically Safe Conventional Smoke Detector (Ivory)SOC E IS Intrinsically Safe Conventional Smoke Detector (Ivory) Model SOC E IS is a Photoelectric Smoke Detector designed for use in hazardous areas which also incorporates a remote indicator output and a removable chamber for easy maintenance. Each detector incorporates Hochikis unique High Performance Chamber Technology removing the need to use Ionisation detectors in the majority of applications. The High Performance Chamber has also enabled the