Pre-Calibrated Combustible Gas Sensor Module - FSM-T-04A

• Gas sensor: TGS6812 (cataly​tic type)
• Detection range: 0 ~ 50,000ppm CH4
• Error: ±3%LEL
• Response time (T90): ≤30S
• Operating Temperature: -10°C ~ +70°C
• Operating Humidity: 20~95%RH (No condensing)
• Input voltage: 5.0±0.2V DC, 3.0±0.1V DC
• Power consumption: ≤1.5W

  • Model Number: FSM-T-04A
  • Data Sheet: Date Sheet File
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  • Pre-Calibrated Combustible Gas Sensor Module
  • Pre-Calibrated Combustible Gas Sensor Module
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Product Specification

FSM-T-04A Combustible Gas Sensor Module Description
The FSM-T-04A combustible gas sensor module is a new unit which utilizes TGS6812, catalytic pellistor type gas sensor which features durability and stability. This module provides analog output voltage proportional to hydrogen gas concentration.(There is a memory in module, where factory calibration data has been store). FSM-T-04A has conformal coatings for moisture proofing and electrical insulation purposes, and is also capable of detecting sensor wire breakage. The unit has a wide range of operating temperature from -10 to +70℃.

Furthermore, the unit can detect CH4, LPG, H2. It is less sensitivity to VOCs gas, it immunes poison by silicon compounds, it suits to work at rugged environment.

FSM-T-04A Combustible Gas Sensor Module Features:
• Linear analog output proportional to gas concentration
• Maintenance free
• Compact size
• Meets RoHS requirements

FSM-T-04A Combustible Gas Sensor Module Applications:
• Gas leak detection in fuel cell systems
• Hydrogen & combustible gas leak detectors

FSM-T-04A Combustible Gas Sensor Module Specification

Product name

Combustible gas sensor module

Model No.


Gas sensor

TGS6812 (catalytic type)

Detection range

0 ~ 50,000ppm CH4
(also can detect methane, iso-butane, and propane)



Output voltage (Vconc)

0.5~4.5V DC(Max 5V)



Factory setting output

Vconc in air


Response time (T90)


Operating conditions

-10°C ~ +70°C, 20~95%RH (No condensing)

Storage conditions

-10°C ~ +80°C, 20~95%RH

Input voltage (VIN)

5.0±0.2V DC , 3.0±0.1V DC

Power consumption



15g or less


φ23.6mm H:23.2mm

Standard test conditions

Ambient conditions

20±2°C, 65±5%RH

Circuit conditions

5.0±0.2V,3.0±0.1V DC

Conditioning period prior to test

≥10 minutes

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