Light, Temperature, Humidity transmitter RS485 output

Technical parameter

• Power supply : 12-24VDC
• Power : ≤0.4W
• Light intensity Measures Range : 0-65535Lux
• Humidity Range : 0%RH-100%RH
• Temperature Range : -40°C -80°C
• Light intensity Accuracy : ±5%(25°C)
• Long-term stability : ≤5%/y
• Working Pressure range : ≤0.15W(@12V DC , 25°C)
• Output Signal : RS485
• Power consumption : ≤0.15W (@12V DC , 25°C)

Interface Description

          Before you wiring and use, please read this article in detail, Improper use may result in irreversible damage to the product.

Communication protocol

Register Address

Communication example

          Read Device Address 0x01's Temperature And Humidity Value

Inquiry Frame

 Answer Frames

How to calculate Temperature And Humidity Value

          Temperature: FF9B H ( hexadecimal ) =-101=> Temperature =-10.1 °C

          Humidity: 292 H ( hexadecimal ) =658=> Humidity =65.8%RH

Read Device Address 0x01's Illuminance value

Inquiry Frame

 Answer Frames

How to calculate Illuminance value

          Illuminance: 000206F6 H ( hexadecimal ) = 132854 => Illuminance =132854Lux

Read Device Address 0x01's Illuminance,Temperature And Humidity Value

Inquiry Frame

 Answer Frames

How to calculate Temperature And Humidity Value

          Temperature : 011CH(hexadecimal) = 284 = 28.4°C

          Humidity : 0292H(hexadecimal) = 658 = 65.8%RH

          Illuminance: 00017734 H ( hexadecimal ) = 96052 => Illuminance =96052Lux