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DFRobot - Gravity: Formaldehyde (HCHO) sensor, 0.01ppm resolution (Arduino & Raspberry Pi compatible) 3.3 - 6V

Item number: DF-SEN0231

EAN: 4251326824207

The Formaldehyde (HCHO) sensor is an Arduino & Raspberry Pi compatible module that is the ideal solution for monitoring indoor air quality.

Category: Adapters & Others

81,03 €

including 19% VAT. , plus shipping (Standard)

From Price per unit
10 74,99 €
Available now!

Shipping time: 7 - 8 workdays


The Formaldehyde (HCHO) sensor is an Arduino & Raspberry Pi compatible module that is the ideal solution for room air quality monitoring.

This is an HCHO(CH2O) sensor module. It can be used to measure HCHO in the air to detect air quality. This sensor module is used in many air testing applications, such as indoor air quality and real-time quality monitoring stations. The sensor module can accurately detect and measure HCHO. This offers many advantages, such as strong anti-blocking capability, high stability, ATC, high sensitivity (up to 0.01ppm) and long life (2 years in the air). Integrated with the Gravity Interface (which is easy to use), a wide input voltage and an optional output signal, our module can be compatible with virtually any MCU.

This is a small size formaldehyde (HCHO) sensor module with Arduino compatibility. This allows you to measure the formaldehyde concentration in the air and see the air quality in real time. Can also be used in a DIY formaldehyde detector.

The sensor also supports 3.3 - 6V wide range power supplies, which means it can be used directly with Arduino and Raspberry Pi. The formaldehyde monitor is integrated into the Gravity Interface and is easy to use with Plug and Play.



High Stability and Sensitivity
Automatic Temperature Compensation
Width Input Voltage (3.3~6V)
Supports DAC and UART Output
Long Life
High Resolution (0.01ppm)



Input voltage: 3,3~6V
Target gas: HCHO
Störgas: Alcohol, CO & etc.
Range of detection: 0~5ppm
Resolution: 0.01ppm
Rise time: ≤3 minutes
Response time: ≤60 seconds
Resumption time: ≤60 seconds
Interface type: Gravity 3 pin
Output signal: Optional DAC(0.4~2V,for 0-5ppm) or UART(9600)
Operating temperature: 0~50?
Operating humidity: 15%RH-90%RH(No condensation)
Storage temperature: 0~50?
Lifetime: 2 years (in air)
Dimension: 38*28*15mm/1.50*1.10*0.59inches
Weight: 22 g


HCHO Sensor Module x1
Digital Gravity 3-Pin Cable x1
M3 x 10 Nylon Säule x4
M3 x 5 Screws x8

Shipping weight: 0,05 Kg
Product weight: 0,02 Kg