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Home / Temperature and Humidity / Relative Humidity & Temperature Transmitters / RHT-MODBUS Relative Humidity and Temperature Transmitters.
RHT-MODBUS Relative Humidity and Temperature Transmitters.

RHT-MODBUS Relative Humidity and Temperature Transmitters.

The RHT-WM-485-LCD and RHT-DM-485-LCD transmitters include high precision and stability sensors for measuring relative humidity and temperature. They are microprocessor based devices and, therefore, allow being entirely configured through an RS485 interface using the Modbus RTU command. The DigiConfig software allows the configuration of all transmitter features as well as its diagnostic procedure.The RHT-WM-485-LCD model is intended for wall mounting while the RHT-DM-485-LCD model is equipped with an elongated sensor rod for installation in ducts or through walls.

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RHT Modbus Transmitter

  • Description

Description

The RHT-485-LCD series (comprising the RHT-WM-485-LCD wall-mount and RHT-DM-485-LCD duct-mount configurations) represents an advanced industrial instrument designed to provide reliable relative humidity and temperature telemetry over data networks. These microprocessor-driven transmitters leverage specialised capacitive and thermal sensing layers to feed real-time atmospheric conditions straight into an integrated 4.5-digit backlit LCD screen while broadcasting measurements serially. Equipped with a built-in RS485 digital output communicating over native Modbus RTU protocol, the hardware allows operators to daisy-chain numerous devices across a single long-distance communication bus. Users can configure network node addresses, communications speeds, or shift local display fields to track calculated psychrometric Dew Point via intuitive on-board tactile buttons or the companion DigiConfig setup application.

Features

  • Integrated Display Interface: Features a 4.5-digit local LCD screen that cyclically reads out active temperature, relative humidity, or software-calculated Dew Point values directly at the mounting site.
  • Network-Ready RS485 Modbus RTU: Implements half-duplex serial communication to eliminate costly multi-cable paths, linking directly with industrial PLCs, SCADA hosts, and smart building management systems.
  • On-Board Field Programming Keypad: Permits immediate calibration adjustments, baud rate selection, and device network addressing using tactical front panel keys without demanding external software accessories.
  • Tailored Environmental Form Factors: Offers a compact RHT-WM layout for ambient low-profile room installation alongside an elongated RHT-DM stainless steel insertion probe engineered for high-velocity duct networks.
  • Segmented Industrial Ingress Safety: Seals the core processing electronics within a durable IP65-rated polycarbonate enclosure while protecting the sensitive tracking module under an IP40 air filter cap.

Product

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Price

Product Description

8803006430

£110.87

RHT-WM-485-LCD Wall Mounted Temperature and Relative Humidity Transmitter with LCD display and RS485 Modbus Output. Readings for Air temperature, Relative humidity and calculated Dew point values. Display can show two values, or temperature on its own. Temperature Range: -40 to +100°C, Relative Humidity Range: 0 to 100%RH and Dew Point Range: -40 to +100°C. Power Supply 12 to 30vDC. IP65 ABS Polycarbonate enclosure, Dimensions: 60 x 70 x 35mm, plus 37.2mm IP40 Polyamide Sensor below housing.
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8803116430

£119.05

RHT-DM-485-LCD 150mm Duct Mounted Temperature and Relative Humidity Transmitter with LCD Display and RS485 Modbus Output. Readings for Air temperature, Relative humidity and calculated Dew point values. Display can show two values, or temperature on its own. Temperature Range: -40 to +100°C, Relative Humidity Range: 0 to 100%RH and Dew Point Range: -40 to +100°C. Power Supply 12 to 30vDC. IP65 ABS Polycarbonate enclosure, Dimensions: 60 x 70 x 35mm, 150mm Duct mounted probes with IP40 Polyamide Sensor tip.
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8803126430

£121.57

RHT-DM-485-LCD 250mm Duct Mounted Temperature and Relative Humidity Transmitter with LCD Display and RS485 Modbus Output. Readings for Air temperature, Relative humidity and calculated Dew point values. Display can show two values, or temperature on its own. Temperature Range: -40 to +100°C, Relative Humidity Range: 0 to 100%RH and Dew Point Range: -40 to +100°C. Power Supply 12 to 30vDC. IP65 ABS Polycarbonate enclosure, Dimensions: 60 x 70 x 35mm, Extended 250mm Duct mounted probes with IP40 Polyamide Sensor tip.
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