Generic XY-MD02 Temperature & Humidity Transmitter Modbus - RS485 DIN Rail Mount

Name: Generic XY-MD02 Temperature &amp; Humidity Transmitter Modbus - RS485 DIN Rail Mount
Brand: Generic
SKU: SENS-3465
Price: 891.00 INR
Availability: OutOfStock

₹891.00 (Inclusive of all taxes)

Out of Stock

The XY-MD02 is an industrial-grade temperature and humidity transmitter module featuring a high-precision SHT20 sensor and RS485 Modbus RTU interface. Designed for DIN rail mounting, it operates from a wide 5-30V DC supply and is compatible with PLCs, SCADA systems, and industrial data acquisition setups.

Features

High-precision SHT20 sensor with ±0.5°C temperature and ±3%RH humidity accuracy.
Industrial RS485 interface with Modbus RTU protocol for robust long-distance communication up to 1000m.
Wide operating voltage range of 5-30V DC and low power consumption below 0.2W.
Standard DIN35 rail mounting for easy integration into control cabinets and industrial panels.
Extended operating temperature range from -40°C to +85°C for harsh environments.

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Description

This transmitter integrates a Sensirion SHT20 digital sensor chip, known for its calibrated linear output and long-term stability. The module provides fully digital, pre-processed temperature and humidity readings via a robust RS485 serial bus, ensuring signal integrity in electrically noisy industrial settings. The hardware includes lightning protection circuitry for enhanced field durability.

The communication layer supports both the standard Modbus RTU protocol for seamless integration with industrial automation systems (PLCs, HMIs, DCS) and a simpler ordinary protocol for direct serial communication with microcontrollers like Arduino or Raspberry Pi via UART adapters. Its compact, rail-mount design simplifies installation in equipment cabinets, HVAC units, and environmental monitoring stations.

Key Features

Industrial-grade construction with a high-precision, imported SHT20 sensor element.
Dual-protocol support: Standard Modbus RTU and a configurable ordinary serial protocol.
Wide-range DC power input (5-30V) with reverse polarity and overvoltage protection.
Long-distance RS485 communication capability, supporting networks up to 1000 meters.
Low power consumption design, suitable for continuous monitoring applications.
Extended operational temperature range from -40°C to +85°C.
Standard DIN35 mounting rail clip for quick and secure panel installation.
High-resolution measurement with 0.1°C and 0.1%RH resolution.

Applications

HVAC system monitoring and control for air handling units and ductwork.
Environmental condition monitoring in industrial equipment cabinets and server rooms.
Agricultural greenhouse climate control and data logging systems.
Building automation for smart energy management and indoor air quality assessment.
Process monitoring in pharmaceutical storage, food production, and cleanrooms.

Technical Specifications

Model Number	XY-MD02
Sensor Type	SHT20 Digital Temperature & Humidity
Supply Voltage	DC 5V ~ 30V
Output Interface	RS485 (2-wire, A/B)
Communication Protocol	Modbus RTU / Ordinary Serial Protocol
Temperature Range	-40°C to +85°C (Operating)
Temperature Accuracy	±0.5°C
Temperature Resolution	0.1°C
Humidity Range	0% RH to 80% RH
Humidity Accuracy	±3% RH
Humidity Resolution	0.1% RH
Power Consumption	< 0.2W
Mounting	Standard DIN35 Rail
Dimensions (L x W)	65 mm x 46 mm
Weight	Approx. 50 g

Frequently Asked Questions

What is the operating voltage range for the XY-MD02 transmitter?

The module accepts a wide DC input range from 5V to 30V, making it compatible with common 12V or 24V industrial power supplies as well as 5V logic rails. It includes internal protection against reverse polarity and voltage spikes.

How do I communicate with this sensor using Modbus RTU?

Connect the RS485 A and B lines to your host adapter (e.g., USB-to-RS485). Use standard Modbus RTU commands to read holding registers; the sensor's documentation provides the specific register addresses for temperature and humidity values. Baud rate, parity, and stop bits are configurable.

Can I use this transmitter with an Arduino or Raspberry Pi?

Yes, but you will need an RS485 to TTL/UART converter module (e.g., MAX485) to interface with the 5V or 3.3V serial pins of your microcontroller. You can then use either the Modbus RTU library or the simpler ordinary serial protocol by sending the appropriate query commands.

What is the measurement accuracy and range for humidity?

The integrated SHT20 sensor provides humidity readings from 0% to 80% RH with a typical accuracy of ±3% RH. Note that prolonged exposure to condensing environments (above 80% RH) may affect sensor longevity and calibration.

How is the module installed in an industrial panel?

The transmitter features a spring-clip latch for standard DIN35 mounting rails, commonly found in electrical enclosures and control panels. Simply snap the module onto the rail. Ensure proper wiring of power, ground, and the RS485 communication lines with correct polarity.