SMART SENSOR ST8990 Multi Gas Monitor Rechargeable 4 in 1 O₂ LEL CO H₂S Gas Detector Tester Sensor with Backlight Alarm Function LCD Display

Introduction:
The Multi-Gas Meter is a portable and handheld instrument that is capable to use continuously monitoring four different gas: O₂, LEL, CO, H₂S, when detected these gases, all the concentration will displayed on the LCD. The unit also provided user to configure high and low alarms, also STEL/TWA alarm function. The unit has audio and visual alarm once the alarm condition is exceeded.
 
Specifications:
Brand: SMART SENSOR
Model: ST8990
Color: Yellow
Material: ABS
Carbon Monoxide Range: 0～999ppm
Hydrogen Sulfide Range: 0～500ppm
Oxygen Range: 0～30%VOL
Combustible Gas Range: 0～100%LEL
Operation Current: 220mA
Short Circuit Current: ≤3A
Operation Voltage: 3.7V
Maximum Open Circuit Voltage: ≤4.2A
Battery: Lithium battery
Battery Capacity: 2500mAh
Display Type: Segment type LCD
Operation Humidity: 15%~95%RH
Operation Temperature: 10℃～50℃
Storage Temperature: 0～40℃
Item Size: 11.45 * 6.44 * 4.45cm / 4.50 * 2.53 * 1.75in
Item Weight: 200g / 7oz
Package Size: 20 * 11 * 7cm / 7.87 * 4.33 * 2.75in
Package Weight: 475g / 16.8oz

Notes:
-Gas monitor only, other accessories are not included.
-Due to manual measurement, there may be deviation.
-Due to photograph light or other reasons, the item in picture and material object may have slight difference, please in kind prevail.
-Please read the manual carefully before you use it.

Packing List:
1* Multi-Gas Meter
1* Manual
1* USB Cable