[KM75B92]  RS485 ceiling type temperature, humidity and noise sensor

KM75B92 KM75B92 KM75B92

Technical Parameters

Technical parameterParameter value
BrandKLHA
Temperature measuring range-30℃~80℃
Temperature measuring accuracy±0.5℃ @25℃
Humidity measuring range0~100%RH
Humidity accuracy±3%RH @25℃
Illuminance measuring range0~65535Lux
Illuminance allow deviation±7%
Repeatability test±5%
Illuminance detection chipImport digital
Wavelength range380nm~730nm
Communication InterfaceRS485
Default baud rate9600 8 n 1
PowerDC6~24V 1A
Running temperature-30~85℃
Working humidity5%RH~90%RH

Product Size

KM75B92

Wiring instructions

Why choose this product?

KM75B92 KM75B92 KM75B92

How to use?

KM75B92

Application solution

KM75B92

Pictures

KM75B92 KM75B92 KM75B92 KM75B92

Communication Protocol

    The product uses RS485 MODBUS-RTU standard protocol format, all operation or reply commands are hexadecimal data. The default device address is 1 when the device leaves the factory, and the module or NON-Recorder default baud rate is 9600,8,n,1 ,but data recorder default baud rate is 115200 .
1. Read data (function code 0x03)
    Inquiry frame (hexadecimal), sending example: query 1 data of 1# device, the upper computer sends the command: 01 03 00 00 00 03 05 CB .
Address Function Code Start Address Data Length Check Code
010300 0000 0305 CB
    For the correct query frame, the device will respond with data: 01 03 06 00 7B 00 00 00 00 C5 7F , response format:
Address Function Code LengthData 1Data 2Data 3Check Code
0103 0600 7900 7A00 7B C5 7F
    Data description: The data in the command is hexadecimal, take data 1 as an example, 00 79 is converted to decimal value as 121, assuming the data magnification is 100, then the real value is 121/100=1.21, Others and so on.
2. Common data address table
Configuration Address Register Address Register Description Data Type Value Range
4000100 00temperatureRead Only0~65535
4000200 01humidityRead Only0~65535
4000300 02illuminanceRead Only0~65535
4010100 64Model CodeRead/Write0~65535
4010200 65 total number of measuring points read/write 1~20
4010300 66device addressread/write1~249
4010400 67baud rateread/write0~6
4010500 68communication moderead/write1~4
4010600 69protocol typeread/write1~10

Setup Software
Development File
Online shop
Contact Online
Contact Online and service

Email: sale@sonbest.com

BRAND: KLHA

TYPE: KM75B92

WeChat: 13918126020

SKYPE: SOOBUU

Phone: 021-51083595

QQ1: 71182854 QQ2:613035997