MD02 Temperature and Humidity Transmitter SHT20 Sensor - RS485 Modbus
MD02 Temperature and Humidity Transmitter SHT20 Sensor - RS485 Modbus - Image 2
SKU: SENS-3436
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MD02 Temperature and Humidity Transmitter SHT20 Sensor - RS485 Modbus

â‚č525.00 (Inclusive of all taxes)
Out of Stock

The MD02 is an industrial-grade temperature and humidity transmitter featuring a high-precision SHT20 sensor and RS485 Modbus-RTU interface, compatible with PLCs, SCADA systems, and industrial DAQ modules operating on a wide 5-30V DC supply.

Features

  • High-precision SHT20 digital temperature and humidity sensor
  • RS485 interface with Modbus-RTU protocol for industrial communication
  • Wide operating voltage range from 5V to 30V DC
  • Standard DIN35 rail mounting for easy panel integration
  • Extended communication distance up to 1000 meters

Out of stock

Description

The MD02 transmitter integrates a Sensirion SHT20 digital sensor to deliver accurate environmental monitoring. It employs an RS485 hardware interface with a lightning protection design, ensuring robust communication over long distances in electrically noisy industrial environments. The module supports the standard Modbus-RTU protocol, allowing seamless integration into existing industrial control and automation networks.

Engineered for reliability, the transmitter operates across a wide temperature range from -40°C to 70°C. Its DIN35 rail-mount form factor facilitates quick installation in control cabinets and equipment enclosures. The device offers configurable baud rates and supports an automatic data upload function in its common protocol mode, providing flexibility for various system architectures.

Key Features

  • Industrial-grade SHT20 sensor ensures high accuracy and long-term stability
  • RS485 communication supports networks up to 1000 meters in length
  • Wide 5-30V DC input range for compatibility with diverse power supplies
  • Standard Modbus-RTU protocol for easy PLC and SCADA integration
  • DIN35 rail mounting bracket included for professional panel installation
  • Operating temperature range of -40°C to 70°C for harsh environments
  • Lightning protection circuit on RS485 lines enhances system durability
  • Configurable baud rate and slave address (1-247) for network flexibility

Applications

  • HVAC system monitoring and control in commercial buildings
  • Environmental condition monitoring within industrial equipment cabinets
  • Data logging for climate-controlled storage and warehouse facilities
  • Integration into Building Management Systems (BMS) via Modbus networks
  • Precision agriculture and greenhouse climate monitoring systems

Technical Specifications

Model NumberMD02
Sensor TypeSHT20 Digital Temperature & Humidity
Output InterfaceRS485
Communication ProtocolModbus-RTU
Supply Voltage5V to 30V DC
Operating Temperature-40°C to 70°C
Temperature Accuracy±0.5°C
Temperature Resolution0.1°C
Slave Address Range1 to 247 (Default: 1)
MountingDIN35 Rail
Dimensions (L x W)74mm x 44mm
Product Weight0.043 kg

Frequently Asked Questions

What is the operating voltage range for the MD02 transmitter?

The MD02 transmitter accepts a wide DC input range from 5V to 30V. This makes it compatible with common 12V or 24V industrial power supplies, as well as 5V logic-level systems, without requiring an additional voltage regulator.

How do I communicate with the MD02 sensor?

Communication is via a two-wire RS485 interface using the Modbus-RTU protocol. You will need an RS485 to USB or RS485 to serial converter to connect it to a PC or PLC. The default slave address is 1, and the baud rate is configurable via the provided configuration tool.

Can I change the Modbus slave address on this module?

No, this specific version of the MD02 module does not support changing the slave ID via software. It is fixed, typically at address 1. For systems requiring multiple sensors, ensure your network hardware or software can handle devices with identical addresses, or source a configurable version.

What is the maximum cable length for the RS485 connection?

Using standard 24 AWG twisted-pair cable, the RS485 connection can reliably extend up to 1000 meters (3280 feet) at lower baud rates (e.g., 9600 bps). For longer distances or noisier environments, use shielded cable and proper termination.

How is the MD02 transmitter mounted?

The module is designed for standard DIN35 mounting rails, commonly used in industrial control panels and electrical enclosures. A matching DIN35 rail clip or bracket is included for quick and secure snap-on installation.

Package Includes

  • 1 x MD02 Temperature and Humidity Transmitter
  • 1 x DIN35 Rail Mounting Bracket

Additional Information

Weight 0.043 kg
Dimensions 7.4 × 4.4 cm

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