1Product Introduction:
WJ400A is a high-precision environmental monitoring transmitter that integrates temperature, humidity, lighting, and CO2. Internally, it adopts a 32-bit high-performance processor with fast processing speed, strong anti-interference ability, and supports remote parameter configuration.
IIApplication scenarios:
Widely applicable to indoor and outdoor environmental monitoring, agricultural greenhouses, flower cultivation, and other occasions that require monitoring of light intensity and CO2 concentration
three、Product Features
1. Can simultaneously collect lightingCO2 Concentration, temperature, and humidity signals
2. adoptRS485 interface;
3. Support standardsMODBUS-RTU communication protocol;
4. The product testing software comes with functions such as digital display, curve recording, and data storage;
fourTechnical parameters:
temperature parameter |
Measuring range:-40~120℃ |
Measurement accuracy:±0.5℃(-30~90℃) | |
Humidity parameters |
Measuring range:0~100%RH |
Measurement accuracy:±3%RH(10~90%RH)@25℃ | |
|
Light intensity parameters |
Measuring range:0~65535lx |
Measurement accuracy:±2%lx @(0~3000lx) | |
Spectral response:400~700nm (typical value 560nm) | |
CO2 concentrationparameter |
Measuring range:0~5000PPM |
Measurement accuracy:± (50PPM+5% reading value) (built-in temperature compensation) | |
communication interface |
RS485 |
communication protocol |
MODBUS-RTU |
|
work environment |
Temperature: -20~80 ℃ |
Humidity: 20~80% RH | |
average current |
25mA @ 24VDC |
Overall dimensions |
162mm (length) x 74mm (width) x 64mm (depth) |
power supply voltage |
7~24VDC |
5、 Dimensions (mm)

sixProduct selection:
WJ400A |
environmental monitoringtransmitter |
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T |
temperature |
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H |
humidity |
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L |
illumination |
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C |
CO2 |
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C4 |
RS485 |
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V1 |
7~24VDC power supply |
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