SKU: SENS-2916
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DFRobot Threshold Formaldehyde HCHO Detection Sensor (0-20ppm) - Fixed Threshold Module

₹2,249.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Threshold Formaldehyde HCHO Detection Sensor is a dedicated module for monitoring hazardous HCHO levels in air, featuring a fixed alarm threshold of 0.06ppm. It provides a simple digital high/low output signal for easy integration with Arduino, Raspberry Pi, industrial PLCs, and other 5-24V DC control systems.

Features

  • Fixed threshold detection at 0.075mg/m³ (0.06ppm) for immediate hazard alerting.
  • Wide operating voltage range from 5V to 24V DC for flexible system integration.
  • Fast response time of less than 15 seconds to changes in formaldehyde concentration.
  • Built-in LED status indicator provides instant visual confirmation of alarm state.
  • Compact, flame-retardant PVC housing ensures durability and safe installation.

Out of stock

Description

This professional-grade formaldehyde (HCHO) detection sensor operates on a fixed-threshold principle, triggering a digital output signal when the preset safety limit of 0.06ppm is exceeded. It utilizes a stable electrochemical sensing element designed for long-term monitoring without the need for user calibration.

The module is engineered for reliability in demanding environments, featuring a wide operating temperature range from -10°C to 50°C and a robust PVC housing. Its simple high/low logic output makes it directly compatible with microcontrollers, PLC digital inputs, and alarm systems, providing a straightforward solution for real-time air quality safety monitoring.

Key Features

  • Fixed-Threshold Operation: Pre-calibrated to trigger at 0.075mg/m³ (0.06ppm), eliminating complex setup.
  • Instant Digital Output: Provides a clear high/low signal for immediate system response or alarm activation.
  • Fast-Response Sensing: Electrochemical sensor reacts to hazardous levels in under 15 seconds.
  • Wide Voltage Compatibility: Operates from 5V to 24V DC, suitable for both low-voltage logic and industrial power rails.
  • Integrated Status LED: Visual indicator simplifies installation debugging and provides at-a-glance status.
  • Durable Flame-Retardant Housing: PVC construction ensures safety and longevity in various indoor environments.
  • Low Power Consumption: Draws less than 100mA, enabling use in battery-backed or energy-conscious systems.
  • Maintenance-Free Design: No user calibration required; ready for out-of-the-box deployment.

Applications

  • Indoor Air Quality (IAQ) monitoring systems in homes, offices, and schools.
  • Safety interlocks and alarm panels in laboratories and industrial workshops using formaldehyde.
  • Integration into smart home or building automation hubs for environmental health alerts.
  • Portable air quality testing devices and DIY environmental monitoring stations.
  • Preventive monitoring in furniture manufacturing or wood processing facilities.

Technical Specifications

Sensor TypeHCHO (Formaldehyde) Detection Sensor
Detection Range0-20 ppm
Alarm Threshold0.075 mg/m³ (0.06 ppm)
Operating Voltage5 – 24 V DC
Power Consumption< 100 mA
Output SignalDigital High/Low (Threshold-based)
Response Time< 15 seconds
Operating Temperature-10°C to 50°C
Housing MaterialFlame-Retardant PVC
Dimensions (L x W x H)12 x 9 x 4 cm
Weight0.025 kg

Frequently Asked Questions

What is the exact alarm threshold of this formaldehyde sensor?

The sensor is factory pre-calibrated with a fixed alarm threshold of 0.075 milligrams per Cubic Sensor meter (mg/m³), which is equivalent to approximately 0.06 parts per million (ppm) of formaldehyde (HCHO). It triggers its digital output signal immediately when this concentration level is detected.

How do I interface this sensor with an Arduino or Raspberry Pi?

Connect the sensor's power (5-24V DC) and ground pins to your controller's power supply. The digital output pin can be connected directly to a digital input pin on an Arduino or Raspberry Pi GPIO pin. The output will be logic HIGH or LOW depending on whether the formaldehyde concentration is above or below the 0.06ppm threshold.

Does this sensor require any calibration or maintenance?

No, this is a fixed-threshold sensor designed for maintenance-free operation. It comes factory-calibrated and does not require user calibration. The electrochemical sensor element has a specified lifespan, after which the entire module should be replaced for continued reliable operation.

What is the response time when formaldehyde levels change?

The sensor has a fast response time of less than 15 seconds to reach 90% of the final signal value when the formaldehyde concentration crosses the preset threshold. This allows for near real-time detection and alerting of hazardous air quality changes.

Package Includes

  • 1 x DFRobot Threshold Formaldehyde HCHO Detection Sensor Module

Additional Information

Weight 0.025 kg
Dimensions 12 × 9 × 4 cm