SKU: SENS-3438
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Sensirion SHT20 Temperature & Humidity Transmitter Module XY-MD01 - RS485 Modbus

₹499.00 (Inclusive of all taxes)
Out of Stock

The XY-MD01 is an industrial-grade RS485 Modbus transmitter module integrating the high-precision Sensirion SHT20 digital sensor for reliable temperature and humidity monitoring in HVAC, automation, and environmental control systems.

Features

  • High-precision Sensirion SHT20 digital sensor for accurate temperature (±0.3°C) and humidity (±3% RH) measurement.
  • Industrial RS485 interface with selectable Modbus-RTU or custom protocol for robust long-distance communication.
  • Wide 4-30V DC operating voltage range compatible with PLCs, industrial power supplies, and 24V control systems.
  • Compact, durable PCB module designed for integration into control panels, ducts, and weatherproof enclosures.
  • User-configurable baud rate and automatic data upload function for flexible system integration.

Out of stock

Description

The XY-MD01 transmitter module provides a robust, digital interface for environmental sensing by integrating the industry-standard Sensirion SHT20 capacitive humidity and band-gap temperature sensor. The sensor’s calibrated digital output ensures high accuracy and excellent long-term stability, making it suitable for demanding measurement tasks.

Communication is handled via an RS485 transceiver, offering noise immunity and support for multi-drop networks up to 1200 meters. The module firmware integrates both the standard Modbus-RTU protocol and a customizable common protocol, allowing seamless integration with SCADA systems, PLCs, and custom data acquisition hardware. Its wide 4-30V DC input range ensures compatibility with a variety of industrial and embedded power sources.

Key Features

  • Industrial-grade design with high-reliability components for continuous operation.
  • Integrated high-accuracy Sensirion SHT20 sensor with fast response time.
  • Dual-protocol support (Modbus-RTU & custom) for maximum integration flexibility.
  • User-configurable serial parameters: baud rate (1200-115200), parity, stop bits.
  • Automatic data broadcast mode in common protocol for simplified polling.
  • Low power consumption (<0.2W) for energy-sensitive applications.
  • Compact PCB footprint (39mm x 19mm) for space-constrained installations.
  • Wide operating temperature range from -20°C to +60°C.

Applications

  • HVAC system monitoring and control for temperature and humidity regulation.
  • Environmental data logging in smart agriculture and greenhouse management.
  • Indoor air quality (IAQ) monitoring within building automation systems.
  • Process monitoring in pharmaceutical, food storage, and laboratory environments.
  • Integration with industrial PLCs and SCADA via Modbus for factory automation.

Technical Specifications

Model NumberXY-MD01
Sensor CoreSensirion SHT20
Measurement Range (Temperature)-40°C to +125°C (Sensor), -20°C to +60°C (Module Operating)
Measurement Range (Humidity)0% to 100% RH
Accuracy (Typical)±0.3°C (Temperature), ±3% RH (Humidity)
Output InterfaceRS485 (Half-Duplex)
Communication ProtocolModbus-RTU / Custom Protocol (Selectable)
Supply VoltageDC 4V to 30V
Maximum Power Consumption0.2W
Operating Temperature-20°C to +60°C
Storage Temperature-40°C to +125°C
Dimensions (L x W)39 mm x 19 mm
WeightApprox. 4 g

Frequently Asked Questions

What is the difference between the Modbus and Common protocol on the XY-MD01?

The Modbus-RTU protocol is a standard industrial communication protocol for integration with PLCs, SCADA, and HMIs that support Modbus polling. The Common protocol is a simpler, custom protocol with an optional automatic broadcast mode, where the module periodically sends data without being polled, ideal for direct logging to a serial port.

What is the maximum cable length for the RS485 communication?

Using standard 24 AWG twisted-pair cable, reliable communication can typically be achieved up to 1200 meters. Maximum distance depends on baud rate, cable quality, and network noise. For long runs, use proper termination resistors (120Ω) at both ends of the bus.

How do I power the XY-MD01 module?

Connect a DC power supply between 4V and 30V to the module's V+ and GND terminals. The wide input range makes it compatible with 5V, 12V, and 24V industrial systems. Ensure the power supply is stable and can provide the required current, though consumption is very low (<50mA).

How do I change the baud rate or communication protocol?

Configuration is performed via specific Modbus function commands or custom protocol commands sent through the RS485 interface. You will need a USB-to-RS485 converter and configuration software (or a serial terminal) to send the appropriate command frames to set the baud rate, parity, slave address, and select the active protocol.

Can multiple XY-MD01 modules be connected on the same RS485 bus?

Yes, when using the Modbus protocol, each module must be set to a unique slave address (typically 1-247). You can connect up to 32 modules on a standard RS485 network without repeaters. Ensure you use a linear bus topology with proper termination.

Package Includes

  • 1 x XY-MD01 SHT20 Temperature & Humidity Transmitter Module

Additional Information

Weight 0.004 kg
Dimensions 3.9 × 1.9 cm