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, vibration and flash. High precision portable CO, H₂S, O₂ and LEL gas tester with compact size and light weight, very easy to carry and operate.

Specifications:
Brand Name: SMART SENSOR
Color: Blue
Material: ABS
Screen Size: 47 * 38mm / 1.9 * 1.5in
Sensor: Electrochemical Principle
Charging Port: Micro USB DC 5V
Sampling Pump Power Supply: DC 3V power supply
Operation Current: 230mA
Short Circuit Current: ≤3A
Operation Voltage: 3.7V
Maximum Open Circuit Voltage: ≤4.2V
Battery Type: BL-9C
Display Type: Segment type LCD
Operation Humidity: 15%~95%RH
Operation Temperature: -10℃~50℃
Storage Temperature: 0~40℃
Battery Working Runtime: 6 hours (no alarm)
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
Alarm Value Setting: Upper limit and lower limit alarm value can be set
Alarm Alert: Sound/vibration/flash triple alarms
TWA Alarm Value Setting: Time-weighted value, meaning the accumulated value measured within 8 hours
STEL Alarm Value Setting: Short term exposure limit
Item Size: 140 * 75 * 35mm / 5.51 * 2.95 * 1.37in
Item Weight: 270g / 9.52oz
Package Weight: 430g / 15.17oz
Package Size: 24.5 * 9 * 6cm / 9.64 * 3.54 * 2.36in

Package List:
1 * 4 in 1 Gas Detector
1 * USB Cable
2 * Screws
1 * Gas Calibration Hood
1 * Storage Bag
1 * User Manual (English)