For every gas three freely adjustable alarm thresholds, with which sudden gas hazards are recognizable, are available. Toxic gases are additionally monitored for their short-term exposure level and the time weighted average (STEL/TWA). Warnings are given by a loud audible signal tone. Further LEDs indicate the gas, which has caused the alarm. Moreover the display illumination automatically turns on. The proper functioning in the stand-by mode is indicated by means of short signals, whose intervals can be adjusted.

The huge display simultaneously shows all measurement values. Pressing a single key indicates additional information. Zoom function, illumination function and adjustable contrast are further characteristics. A menu driven service mode, which is protected by a codeword, adjusts alarm thresholds, calibration, zero point and special functions.

A special double-sensor reliably measures the toxic gases hydrogen sulfide (H2S) and carbon monoxide (CO). A pressure- and temperature compensated electrochemical sensor permanently monitors the oxygen concentration in ambient air for oxygen deficiency or surplus. For combustible gases and vapours of all kinds, a nearly poison resistant catalytic combustion sensor is available. This sensor also reacts on hydrogen, solvents and alcohols.

The antistatic casing with its small dimensions of 59 x 120 x 34mm is made out of a rugged carbonfiber reinforced polyamide. Highly integrated single-chip-microcontroller and miniature sensors are the prerequisites for the compact design of the new detector. As accessories you can get a charger, carrying case or bag and a calibration set.

Detectable gases	Detection principle	Detection range
CH4, C3H8, H2	Catalytic combustion	0 to 100% LEL
O2	Electrochemical	0 to 25 Vol. %
CO	Electrochemical	0 to 300/700 ppm
H2S	Electrochemical	0 to 100 ppm