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Categorie › Elettronica generale › DFRobot › DF Sensors › RS485 Temperature & Humidity Sensor

RS485 Temperature & Humidity Sensor

CODICE MEPA: 0123149148
BRAND: DFRobot
CODICE PRODUTTORE: SEN0438
CODICE SKU: DF-SEN0438
Disponibilità: 839 Disponibilità (legenda)
41,86 € (escl. IVA)
Descrizione completa
Introduction

Industrial-Grade RS485 Temperature & Humidity Sensor (1200m Transmission). This sensor is designed for harsh environments where standard sensors fail. Unlike I2C/UART sensors that are limited to short distances (< 2m), this RS485 module utilizes the standard Modbus RTU protocol to transmit stable data up to 1200 meters. Fully wrapped in a waterproof aluminum alloy shell, it is the ideal solution for greenhouse monitoring, warehouse management, and HVAC automation.

RS485 Temperature & Humidity Sensor

RS485 Temperature & Humidity Sensor


⚠️ Project Scope Check

  • Wiring distance < 2 meters? Save time and money, check our [Gravity: SHT31-F Digital Temperature and Humidity Sensor]. It's plug-and-play for simple projects.
  • Wiring distance > 10 meters? Or need to daisy-chain multiple sensors? You are on the right page. This is the professional choice for long-distance stability.


    • Hardware Setup Guide (Required Accessories)

    Since this sensor outputs raw RS485 signals, it cannot be connected directly to a microcontroller's GPIO or a PC's USB port.

  • For PC Debugging: You need a [USB to RS485 Converter].
  • For Arduino / ESP32: You need an [RS485 Shield].
  • Power Supply: Requires 12V~36V DC external power (standard 5V from Arduino is insufficient).


    • Technical Quick Reference

    We have extracted the key parameters from the manual for your quick setup:

  • Protocol: Standard MODBUS RTU
  • Baud Rate: 9600 (Default)
  • Wire Sequence: Yellow: RS485 A, White: RS485 B, Red: Power Input (12-36V), Black: GND

    • Pinout of Industrial-Grade RS485 Temperature & Humidity Sensor

    Wiring Diagram of Industrial-Grade RS485 Temperature & Humidity Sensor

    Figure: Pinout & Wiring Diagram of Industrial-Grade RS485 Temperature & Humidity Sensor

    Specification
  • Temperature Measurement Range: -40 ~ 120℃
  • Humidity Measurement Range: 0 ~ 99.9%RH
  • Temperature Accuracy: ± 0.3°C (25°C)
  • Humidity Accuracy: ± 2%RH (25℃)
  • Sampling Cycle Period: 3 sec
  • Power Supply Voltage: 12 ~ 36V (DC)
  • Product Size: 200mm(L) × 15.7mm(D) / 7.87×0.62”
  • Output Signal: RS485 signal
  • Communication Protocol: standard MODBUS RTU protocol
  • Baud Rate: 9600 (default)
  • Display Resolution: Temperature: 0.1℃; Humidity: 1%RH
  • Product Net Weight: 110.0g
  • Sensitivity Attenuation Value: temperature＜0.1℃/year; humidity＜0.5%RH/year
  • Wire Sequence: yellow wire - RS485 A; red wire - power input; black wire - GND; white wire - RS485 B
  • Current consumption: Within 20mA
    • Shipping List
  • RS485 Temperature Humidity Sensor x1

    • Documents
  • Instruction manual