LFH20 Indoor Temperature and Humidity Transmitter

PRODUCT FEATURES

Meet the standard 86-box installation mode
Lightweight and beautiful shell design,using LCD backlight temperature and humidity dual display,easy to use
Adopt imported high-precision sensor and main control, with good long-term stability and anti-interference ability
Optional passive temperature output
CE certification,ROSH
Optional single temperature and single humidity output

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Description

Specification

Product Selection

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Description

LFH20 Indoor Temperature and Humidity Transmitter is specially designed for indoor temperature and humidity detection Atransmitter with small size,simple installation and easy operation.Its pair o lightning strikesSurge,electrostatic discharge,grouppulse,withstand voltage,etc.have special design,anti-interference abilityStrong force.There ae three output modes available:current voltage,and RS485.Can be widelylt is used in computer rooms,buildings,warehouses and other places wheetemperature and humidity measurement is required.

Specification

①Relative Humidity
Transmitter	Digital
Range	0%~100%RH
Output	RS485/Modbus,0~10VDC,4~20mA optional
Accuracy	±3%@20℃&20~80%RH
Response time	≤10s(20℃,slow flow air)
②Temperature
Transmitter	Digital or thermal resistance,see model selection table
Range	0~50℃,-20~60℃
Output	4~20mA,0~10VDC,RS485/Modbus optional
Thermal resistance	See model selection instruction and thermal Resistance index table
Accuracy	Digital type:±0.3℃@20℃;Thermal resistance type:±0.2~0.4℃@25℃、See selection table
Power supply	Voltage type/RS-485:15~35VDC/24VAC±20% (AC power supply requires isolated power supply)	Current Type:19.5~35VDC(RL=500Ω)/ 9.5~35VDC(RL=0Ω)
Output load	≤500Ω(Current type)、≥2KΩ(Voltage type)
Display	LCD display optional,with unit display and backlight (4~20)mA output without backlight
Case Material	PC case
Working Environment	-20~60℃,5%-95%RH(Non-condensing)
Protection Grade	IP30

Product Selection

Code and Description

Remark

LFH20

Indoor temperature and humidity transmitter

Model

±3%RH(±0.3℃)

Accuracy

V10

0~10VDC(3-wired)

Humidity
Output

4~20mA(2-wired)

RS485/Modbus

No output

V10

0~10VDC(3-wired)

NTC20K,±0.4℃@25℃

Temperature
Output

4~20mA(2-wired)

NTC10K,±0.4℃@25℃

RS485/Modbus

No output

PT1000,±0.2℃@0℃

PT100,±0.2℃@0℃

Temperature
Measurement
Range

0~50℃

-20~60℃

other(Customized)

Display

LCD display

LFH20 3 A4 A4 1 1

Model Example

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