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LFH21 Temperature and Humidity Controller is a product specially designed for indoor temperature and humidity detection and control. It has the advantages of compact size, simple installation and convenient operation. lt has special design for lightning surge, electrostatic discharge, group pulse, voltage resistance, etc., strong anti-interference ability, and has an alarm function. It is widely used in computer rooms, buildings, warehousing and other places where temperature and humidity measurement and control are required.
Standard switch box installation method for easy use.
Light and beautiful shell design, with LCD backlight to display dual temperature and humidity.
Using imported high-precision sensors with good long-term stability and anti-interference ability.
Optional passive temperature output.
Temperature and humidity offset can be set to facilitate customer on-site operation.
CE certification, ROSH.
With relay and alarm function.
1. RELATIVE HUMIDITY
Sensor | Digital |
Range | 0%~100%RH |
Output | RS485/Mod bus, 0~10V DC |
Accuracy | ±3%@ 20℃ & 20~80%RH |
Response time | ≤10s (20'℃, slow flow air) |
2. TEMPERATURE
Sensor | Digital or passive thermal resistor, details in below selection table | |
Range | 0~50℃, -20~60℃ ETC | |
Output |
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Thermal resistance | Details in selection table and thermal resistance graduation table | |
Accuracy | Digital type: ±0.3℃@20℃; see table below Passive thermal resistance: typical ±0.2~0.4℃@25℃ | |
Power supply | RS485: 15~35V DC / 24VAC±20% | Voltage: 15-35VDC / 24VAC±20% |
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Output load | ≥10 KΩ(voltage output) | |
Display accuracy |
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Display and buttons | LCD display and keys with unit display and backlight | |
Alarm function |
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Relay |
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Shell material | PC shell | |
Operating environment |
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Protection Grade | IP30 | |
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RS485/Modbus 0~10V DC
