Sound gas generator

ST8900 SMART SENSOR Description: Multigas meter is a portable and handheld instrument that is capable to use continuously monitoring four different gas: CO, H2S, O2, LEL, when detected these gases, all the concentration will be displayed on the LCD. The unit provideds user with configure high and low alarms, also has STEL/TWA alarm function. The unit has audio and vibration visual alarm once the alarn condition is exceeded. Features: This multifunctional rechargeable detector can test for combustible gas, oxygen, carbon monoxide, hydrogen sulfide at the same time. With a large LCD screen display the measured results, you can get 4 gases concentration at a glance. This multigas monitor has sound and light vibration alarm, you can set audio alarm decibel that can give you a obvious prompt. Adopting advanced sensor, which gives a quick and accurate measurement. Portable and handheld, easy to operate and carry. Widely used in shipping, mining, oil exploitation, chemical, gas pipeline, tunnel construction, coal, metallurgy, paper, fire, municipal, textile and other industries. Specification: Brand SMART SENSOR Model number: ST8900 Operation current 230mA Operation voltage 3.7V Battery type(include) BL-9C Plug type EU Plug 220V, US Plug 110V (Optional) Operation humidity 15%-95% Storage temperature 0-40℃ Dimension 75*138*43 MM Short circuit current ≤3A Maximum open circult voltage ≤4.2V Display Type Segment type LCD Operation temperature -10℃-50℃ Weight 753/26.6oz Battery working runtime 6 hours(no alarm) Detection Gas Carbon Monoxide(CO, Hydrogen Sulfide(H2S), Oxygen(O2), Combustible Gas(LEL) Resolution CO: 1ppm, H2S: 1ppm, O2: 0.1%VOL, LEL: 1%LEL Measuring range 0-999pm(Carbon Monoxide) Measuring range 0-500ppm(Hydrogen Sulfide) Measuring range 0-30%(Oxygen) Measuring range 0-100%(LEL) Warm up time 20 Seconds