IoT product and technology solution provider

RS485 Output Wall Mounted CH2O Transmitter

This RS485 Formaldehyde Temperature and Humidity Transmitter is equipped with a high-precision electrochemical sensor, supporting the monitoring of formaldehyde concentration (0-5ppm), temperature (-40℃~+80℃), and humidity (0~100% RH). With a resolution of 0.01ppm, it boasts high measurement accuracy and rapid response. Adopting the ModBus-RTU protocol, the device offers a maximum communication distance of 2000 meters and features a wide DC voltage supply range (10-30V) for multi-scenario adaptation. Its waterproof wall-mounted design enables easy installation, and an optional OLED display is available. Supporting 24/7 continuous online monitoring, it is widely applicable in industrial environments, air purification equipment, and other scenarios.
  • Model No.:

    LW310D-CH2O(RS485)
  • Use:

    Formaldehyde monitoring
  • Power Supply:

    10~30VDC
  • Certificates:

    CE,ROHS
  • Customized Support:

    OEM, ODM
  • Warranty:

    1 Year
  • Product Detail

ZONEWU RS485 Formaldehyde (CH₂O) Transmitter



Key Applications & Use Cases

Formaldehyde Control in Chemical/Building Materials Production Workshops

Designed specifically for scenarios like chemical synthesis and wood-based panel/resin production, this device accurately monitors formaldehyde emission concentrations during production. Equipped with a high-precision electrochemical sensor, its 0-5ppm measurement range covers the OSHA-recommended action threshold (0.5ppm), while the 0.01ppm high resolution can capture trace concentration changes. Adopting differential transmission technology and optoelectronic isolation design, it effectively resists interference from workshop motor start-stop and equipment electromagnetic radiation, with a data transmission error rate of less than 0.01%, ensuring production safety and compliance.

Industrial Warehouse/Logistics Environment Monitoring

Tailored for long-distance monitoring needs in large raw material warehouses and finished product storage areas, a single bus supports networking of 32-256 devices without complex wiring. The ultra-long 2000-meter communication distance covers large warehouse spaces; paired with the Modbus-RTU protocol, it seamlessly integrates with warehouse management systems. The -40℃~+80℃ wide temperature operating range and IP protection design enable it to withstand dusty, high-humidity warehouse environments, preventing material deterioration or personnel health risks caused by excessive formaldehyde.

Industrial Waste Gas Treatment Efficiency Monitoring

Targeting the inlet/outlet monitoring needs of formaldehyde waste gas treatment equipment, it provides real-time concentration data feedback. With a fast response time of ≤35s, it accurately captures formaldehyde concentration changes before and after treatment, helping optimize treatment process parameters. It supports direct linkage with PLC and industrial configuration software: when concentrations exceed limits, it automatically triggers the waste gas treatment system to operate at an upgraded level or activates sound-light alarms. This meets industrial environmental emission regulatory requirements while retaining complete data logs for easy traceability.

Air Safety Monitoring in Electronics/Precision Manufacturing Workshops

Aligned with the strict environmental requirements of electronics factories and precision instrument production workshops, the device operates at a low power consumption of just 0.12W, with no risk of electromagnetic interference. The 10-30V DC wide-voltage power supply is compatible with industrial power distribution systems, and its wall-mounted installation saves production space. It simultaneously monitors three parameters (formaldehyde, temperature, and humidity) with ±0.5℃ temperature accuracy and ±3% RH humidity accuracy, providing dual protection for product quality stability and employee occupational health.



CH2O Sensor Specification:


Power Supply Voltage

10~30V DC

Output Signal

485

  Power Dissipation

0.12W

Temperature Measurement range

-40℃~+80℃

Humidity Measurement range

0~100%RH

Formaldehyde Measurement range

0~5ppm

Temperature Accuracy

±0.5℃(25℃)

Humidity Accuracy

±3%RH(60%RH,25℃)

Working Temperature

-20~50℃ 

Working Humidity

15~90%RH No condensation 

Pressure Limit

91~110kPa

Stability

≤7% Signal value year

Response Time

≤35s

Preheating Time

≥5min

Formaldehyde zero drift(-20~40℃)

≤±0.5ppm

Epetitiveness

≤2%

Working Life

≥24 months

Accuracy

±5%FS(@1ppm、25℃、50%RH)

Resolution Ratio

0.01ppm




Packaging:

Single gross weight: 0.600 KG

Single package size: 23X20X5 cm

 



Application: 


The High precision CH2O gas sensor also widely used for gas monitoring of Chemical production, Ward monitoring, Vegetable greenhouse, Livestock and poultry farms, Tunnel monitoring, Cold chain logistics vehicle, Cold storage monitoring, Biosafety laboratory.

 

Certifications


We are best gas sensor manufacturer and exporter in China with more than 10 years. Our CH2O gas sensor products are certified  with of CE, ROHS.

 

 

Production Process:


 


Why choose us:


1. Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
2. Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
3. Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
4. Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate. 
5. Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.

Want to know about this product?

SEND A MESSAGE
Get A Free Quote

If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.

Related Products
High precision LoRaWAN Water Quality Dissolved Oxygen Sensor High precision LoRaWAN Water Quality Dissolved Oxygen Sensor
The LoRa water quality dissolved oxygen sensor integrates collection, monitoring, and transmission, with a built-in temperature transmitter (automatic compensation) and imported fluorescent membrane (stable and reliable). LoRa transmission and communication are far away. OEM & ODM service is accepted.
ZONEWU LoRaWAN HCl Gas Detection Sensor Wireless Hydrogen Chloride Sensor LoRaWAN Leak Detection Alarm
LoRaWAN hydrogen chloride (HCL) sensor is an IoT wireless sensor developed based on LoRa wireless technology, with built-in hydrogen chloride sensor and temperature and humidity sensors. It utilizes electrochemical principles to monitor the concentration, temperature, and humidity of hydrogen chloride in the environment in real-time. This system has the characteristics of high detection accuracy, stable performance, and low power consumption, and is widely used in environmental monitoring, industrial emission monitoring, chemical plants, and other fields.
Solar Water Quality Sensor for Magnesium Ion Detection Solar Powered LoRaWAN Magnesium Ion Sensor for Water Quality Monitoring
LoRaWAN solar water quality magnesium ion sensor is a wireless sensor used to measure the concentration of magnesium ions in water. It is a wireless water quality monitoring device designed specifically for outdoor scenarios and can operate without connecting to mains power. It has the characteristics of automatic temperature compensation, low environmental impact, and high measurement accuracy. Wireless communication is achieved through the connection of aviation connectors and LoRaWAN collectors, which are widely used in the online automatic continuous analysis and detection of ions in industrial wastewater, surface water, drinking water, and seawater, as well as industrial production process control.
Multiple Probes Digital Iot Temperature and Humidity Sensor Multiple Probes Digital Iot Temperature and Humidity Sensor
Low-Power Wireless Temperature and Humidity Sensor, and based on LoRaWAN communication, strong compatibility, wide coverage and with multiple probes to choose from.
ZONEWU HCL Gas Transmitter Industrial RS485 0-10ppm Hydrogen Chloride(HCL) Transmitter
This RS485 hydrogen chloride transmitter adopts electrochemical principle to accurately detect 0~10ppm HCL gas, and simultaneously monitors temperature from -40~+80℃ and humidity from 0~99.9%RH. It features a wide power supply range of 5~28VDC, ModBusRTU protocol and RS485 interface. With industrial-grade stability and reliability, it is suitable for environments from -20~60℃ and has a service life of over 2 years, making it an ideal choice for hydrogen chloride gas monitoring in industrial scenarios.
ZONEWU  Pipeline Wind Speed Transmitter RS485 Pipeline Wind Speed Sensor 0~30m/s Flange Installation
The ZW-FS-N pipeline wind speed transmitter is designed specifically for ventilation, oil fume, and HVAC pipelines, with a built-in high-precision wind speed measurement unit that responds quickly and has low drift. The product adopts RS485 interface and standard ModBus RTU protocol, with a range of 0~30m/s. It supports setting the pipeline cross-sectional area to synchronously calculate the air volume value (m ³/h) in real time. Flanged installation with wind direction arrow markings, intuitive and convenient on-site deployment; The circuit has strong resistance to frequency converter interference and remains stable under harsh working conditions. The device supports DC/AC dual power supply, compatible with software and dip switch dual configuration modes, and comes with screw free terminal blocks, significantly improving installation and maintenance efficiency.
Wireless LoRaWAN Smart Electrical Conductivity Sensor for Water Wireless LoRaWAN Smart Electrical Conductivity Sensor for Water
LoRa water quality EC, temperature, salinity sensor is a water conductivity sensor used to measure the conductivity of solutions. It has an automatic temperature compensation function, which can compensate the conductivity of the current temperature to the specified temperature. It can be widely used for continuous monitoring of the conductivity value of aqueous solutions in fields such as water quality, aquaculture, sewage treatment, environmental protection, pharmaceuticals, food, and tap water. Supports LoRa TDMA self-organizing network and standard LoRaWAN protocol.
RS485 CL2 temperature humidity sensor; Industrial environment monitoring probe; 485 bus temperature humidity transmitter; High-precision temperature humidity sensor RS485 CL2 Sensor Industrial Grade Environmental Monitoring
The RS485 chlorine gas transmitter designed by our company has the characteristics of fast response, high sensitivity, and strong anti-interference ability. Equipped with high-performance chlorine gas sensors and microprocessors, it has the characteristics of high detection accuracy, stable performance, and low power consumption. Suitable for chlorine gas concentration monitoring in industrial safety, environmental monitoring, industrial production and other places. This device adopts a wide voltage 50-28V DC power supply, 485 signal output, standard ModBus RTU communication protocol, can set ModBus address, can change baud rate, and has a communication distance of up to 2000 meters.
Subscribe to Our Newsletter
Sign up for our company lastest news!
Get A Free Quote
Get A Free Quote
If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.

Home

Products

about

contact