Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Target Gas | Formaldehyde (CH2O) |
| Detection Range | 0.00 - 5.00 ppm |
| Output Interface | UART (TTL Level) |
| Supply Voltage | 5.0V DC ± 0.2V |
| Operating Current | < 100 mA |
| Response Time | < 90 Seconds |
| Sensor Lifespan | 2 Years (in air) |
| Operating Temperature | -20°C to 50°C |
| Operating Humidity | 15% RH to 90% RH |
| Module Dimensions | 32mm x 22mm x 20mm |
Anonymous
Apr 10, 2026
Rating: 4/5
Good but needs warm up
Works well after letting it run for a few minutes. Documentation could be clearer on the initial stabilization period.
Anonymous
Mar 03, 2026
Rating: 5/5
Great for air quality projects
Integrated easily with my ESP32. Readings seem consistent compared to my reference meter. UART protocol is straightforward to parse.
Anonymous
Feb 24, 2026
Rating: 5/5
Accurate detection
Noticed changes when using cleaning products. Very sensitive to formaldehyde sources in the environment.
Anonymous
Feb 21, 2026
Rating: 5/5
Reliable sensor
Using this for home monitoring setup. UART output makes parsing data very simple without needing an ADC.
Anonymous
Jan 18, 2026
Rating: 5/5
Perfect for prototyping
Compact size and stable voltage requirements. Highly recommend for DIY sensors and smart home integration.
Q: What is the default baud rate?
A: The default UART baud rate is 9600bps.
Q: Is calibration required upon arrival?
A: Modules are pre-calibrated at the factory, but periodic calibration is recommended for long-term accuracy.
Q: Can this detect benzene?
A: No, this sensor is specific to formaldehyde though cross-sensitivity may occur with other volatile compounds.
Q: Does it work with Raspberry Pi?
A: Yes, it works via USB to TTL serial adapter connected to GPIO pins or USB port.
Q: How long is the cable?
A: This module does not include a cable, pins are provided for soldering or connecting headers.
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