System Sensor 22051TE Photoelectric Smoke / Thermal Multi-Criteria Fire Detector

The System Sensor 22051TE (Series 200 Advanced Range) is a high-performance analog addressable multi-sensor fire detector engineered by System Sensor (Honeywell) for commercial, industrial, and institutional safety applications. By integrating a refined optical light-scattering chamber with a fast-acting electronic thermistor heat sensor inside a modern low-profile white enclosure, the detector monitors both smoke particle density and thermal increases. An onboard microprocessor processes inputs from both sensors simultaneously using intelligent algorithms, enabling rapid detection of fast-flaming fires and slow-smoldering smoke while delivering high immunity to deceptive false alarm sources. Operating across a 15V to 32V DC addressable loop via the System Sensor protocol, the detector features decade rotary decimal switches for simple field addressing (1–159 range), dynamic chamber drift compensation, twin multi-color 360-degree status LEDs, remote indicator driver outputs, and full LPCB, VdS, and CE approvals under EN 54-5 and EN 54-7.