Portable Gas Detector--multi-function

We are offering portable gas detector--multi-function.
Characteristics:
small size and light weight (10.7x6.0x3.6cm/160g)
single button operation, easy to operate
16 hours continuous data logging and 10 event loggings.
Ruggedised cover for demanding working environment
continuous lcd shows real-time gas concentrations.
Standard chargeable li-ion battery (14hours in typical work and recharges in less than 3hours))
audible(95db) alarm and bright wide-angled visual alarm.
vibrating alarm for high noise areas
with backlight, automatically turn on up the alarm and weak light
there are four alarm levelsã¢ï¿½ï¿½low, high, twa, stel and ol(over limit)
simple automatic calibration procedure.
Taking records of twa, stel and maximum exposure value which displayed if necessary
multi operation modes optional
full function self-test of sensor, battery status, circuit integrity and audible/visual alarm.
Options and accessories: sensor, li-ion battery and charger, stainless alligator clip, calibration cover, hosepipe and instructions.