Product Type: 4-in-1 Gas Monitor
Brand: SMART SENSOR
Model: ST8904
Detection Gases: OΓéé, CO, HΓééS, LEL
Sensor Type: Electrochemical (Catalytic for LEL)
Display Type: LCD with Backlight
Alarm Type: Sound, Light and Vibration
Power Supply: 3.7V Rechargeable Lithium Battery
Battery Capacity: 1800mAh
Battery Runtime: Up to 6 Hours
Charging Interface: USB DC 5V
Operating Temperature: -10┬░C to 50┬░C
Operating Humidity: 15% - 95% RH
Dimensions: 138 × 75 × 43mm
Weight: Approx. 270g

Measurement Range:
Oxygen (OΓéé): 0 ΓÇô 30% VOL
Carbon Monoxide (CO): 0 ΓÇô 999ppm
Hydrogen Sulfide (HΓééS): 0 ΓÇô 500ppm
Combustible Gas (LEL): 0 ΓÇô 100% LEL

Resolution:
OΓéé: 0.1% VOL
CO: 1ppm
HΓééS: 1ppm
LEL: 1% LEL

Accessories Included:
1 × ST8904 Gas Monitor
1 × USB Charging Cable
1 × Calibration Hood
1 × Carrying Pouch
1 × User Manual
  

Simultaneous monitoring of 4 gases
Detects OΓéé, CO, HΓééS and combustible gases
High-accuracy industrial sensors
Triple alarm system (sound, light and vibration)
Large backlit LCD display
Rechargeable lithium battery
STEL and TWA alarm functions
Adjustable high and low alarm limits
Fast response time
Portable and lightweight design
Suitable for confined space monitoring
Ideal for industrial safety applications