SMART SENSOR ST8900 4 in 1 Gas Detector H₂S and CO Monitor

This professional 4 in 1 gas detector is designed for detecting CO, H₂S, O₂ and LEL gas. It can continuously monitor the CO, H₂S, O₂ and LEL gas concentration in the surrounding environment, once the gas concentration reaches the level of the alarm, the alarm will sound, light and vibrate. High precision portable CO, H₂S, O₂ and LEL gas tester with compact size and light weight, very easy to carry and operate.  

Features:
Detect 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H₂S), oxygen(O₂) and combustible gas(LEL).
Continuously monitor the CO, H₂S, O₂ and LEL gas concentration in the surrounding environment with professional and accurate measurement.
Sound & light vibration alarm works when one of the CO, H₂S, O₂ & LEL gas concentration reaches the level of the alarm.
Can set automatic shutdown time and concentration of alarm value.
Large color LCD display with backlight for easy reading.
Can connect to a sampling pump to operate in closed place.
Can be widely used in shipping, mining, oil exploitation, chemical, gas pipeline, tunnel construction, coal, metallurgy, paper, fire, municipal, textile and other industries.

Specifications:
Brand Name: SMART SENSOR
Color: Orange
Material: ABS Plastic
Display: Color LCD Backlight Display
Screen Size: 47 * 38mm / 1.9 * 1.5in
Plug: US
Input: 100-240V, 50-60Hz
Sensor: Electrochemical Principle
Duty Cycle: 2 Years
Explosion Proof: √
Protection Grade: IP65
Detection Gas: Carbon Monoxide(CO, Hydrogen Sulfide(H₂S), Oxygen(O₂), Combustible Gas(LEL)
Measurement Range: CO: 0～999ppm, H₂S: 0～500ppm, O₂: 0～30%VOL, LEL: 0～100%LEL
Resolution: CO: 1ppm, H₂S: 1ppm, O₂: 0.1%VOL, LEL: 1%LEL
Accuracy: CO: ±10%, H₂S:±5%, O₂: ±3%FS, LEL: ±5%FS
Alarm: Sound & Light Vibration Alarm (Alarm value can be set)    
Alarm Point: Low Alarm Point CO: 35ppm, H₂S: 10ppm, O₂: 19.5%VOL, LEL: 10%LEL             
                     High Alarm Point CO: 70ppm, H₂S: 20ppm, O₂: 22.5%VOL, LEL: 20%LEL
Alarm Sound: up to 80dB                      
Response Time: Instantaneous
Warm-Up Time: ＜ 20 Seconds      
Continuous Operation Time: 6 hours(slightly vary with working condition)
Power Supply: 1 * Rechargeable BL-9C Lithium-ion 3.7V 2500mAh Battery (Built-in)
Operating Temperature: -10～50℃ / 14～122℉     
Operation Humidity: 15%～95%RH (non condensation)
Product Size: Approx. 140 * 75 * 43mm / 5.5 * 3.0 * 1.7in
Size of the Storage Box: 230 * 205 * 50mm / 9.1 * 8.1 * 2.0in
Product Weight: Approx. 249g / 8.8oz
Package Size: Approx. 25.5 * 21 * 5.5cm / 10.0 * 8.3 * 2.2in
Package Weight: Approx. 753g / 26.6oz

Package List:
1 * 4 in 1 Gas Detector
1 * USB Line
1 * AC Adaptor
1 * Storage Box
1 * Use Manual (English)