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Measure Chemical Conditions with a Sensor Made for Embedded Projects

The Formaldehyde HCHO Sensor Gravity is an environmental sensor designed for water quality work, lab projects, and environmental monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Detection Range: 0~5ppm; Input Voltage: 3.3~6V; Output Signal: Optional DAC(0.4～2V,for 0-5ppm) or UART(9600).

Important: Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.

Why you’ll love it

  • Easy wiring: Gravity-3Pin
  • Controller output: Optional DAC(0.4～2V,for 0-5ppm) or UART(9600)
  • Sensing range: 0~5ppm
  • Power range: 3.3~6V
  • Readable detail: 0.01ppm
  • Useful spec: 22 g

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What you can build

This sensor is a good fit for water test rigs, hydroponics monitors, lab logging, aquarium control, and environmental stations.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include calibration solutions, probe holders, and a data logger, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Formaldehyde HCHO Sensor Gravity
Interface Type Gravity-3Pin
Output Signal Optional DAC(0.4～2V,for 0-5ppm) or UART(9600)
Detection Range 0~5ppm
Input Voltage 3.3~6V
Resolution 0.01ppm
Weight 22 g
Dimension 38*28*15mm/1.50*1.10*0.59inches
Target Gas HCHO

Wiring & usage notes

Connect power and ground, then wire TX and RX to a serial-capable controller at the correct logic level and baud rate. Most gas and chemical sensors work best after warm-up and calibration. Readings can drift with temperature, humidity, and sensor age.

What’s in the box

1 × Formaldehyde HCHO Sensor Gravity

Frequently Asked Questions

What does the Formaldehyde HCHO Sensor Gravity measure? It is designed to measure sensor data for embedded projects.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this UART sensor? This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.
Does it need calibration? Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Formaldehyde HCHO Sensor Gravity

Formaldehyde HCHO Sensor Gravity

Low stock: 1 left

Product Code

SEN0231

₱ 2,707.00
₱ 2,707.00
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