The GS-133 detects all mixtures of air and combustible gas (Natural Gas, Methane, Propane, Butane, Acetylene, GPL, etc). The detector detects two levels of gas concentration - with corresponding output reactions. The main GS-133 features are: high reliability and sensitivity, compact size and long stability & lifetime.
The detector is intended to detect human body movement in buildings. Using two sensors ensures better immunity against triggering by moving pets. The signal is processed by a multiple signal analysis method which guarantees excellent sensitivity and a high resistance to false alarms. Detection analysis can be adjusted to increase its immunity (if installed in a problematic location). The detector distinguishes itself with excellent immunity against high frequency interference and other false signals. It can be installed on a flat wall or in a corner.
The detector indicates fire hazards using the built-in LED indicator and alarm outputs ALARM and TAMPER. These outputs must be connected to control panels complying with EN 50131-3. The SD-282 ST consists of two independent detectors – an optical smoke detector and a heat detector. The optical smoke detector works on the principle of scattered light and is very sensitive to dust particles which are present in smoke. There is also a built-in heat detector for detecting fire which generates heat quickly with a small amount of smoke. The microprocessor performs digital analysis for a high false-alarm immunity.