SKU: SENS-3380
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RAKwireless WisBlock Temperature and Humidity Sensor Sensirion SHTC3 RAK1901 - I2C Interface

₹599.00 (Inclusive of all taxes)
Out of Stock

The RAK1901 is a WisBlock Sensor module integrating the Sensirion SHTC3 digital temperature and humidity sensor, designed for seamless integration with RAKwireless WisBlock Core modules (e.g., RAK4631) for IoT applications. It provides high-accuracy environmental sensing via I2C interface, ideal for battery-powered LoRaWAN®, BLE, and point-to-point data acquisition systems.

Features

  • Integrates Sensirion SHTC3 digital sensor for precise temperature (±0.2°C) and humidity (±2% RH) measurement.
  • Designed for the RAKwireless WisBlock ecosystem; plugs directly into WisBlock Core boards for rapid IoT deployment.
  • Ultra-low power consumption, optimized for battery-operated wireless sensor nodes and remote monitoring.
  • Wide operating temperature range from -40°C to +125°C for harsh environment reliability.
  • Compact form factor (10mm x 11mm) with a standard 4-pin WisBlock connector for easy system expansion.

Out of stock

Description

The RAK1901 WisBlock Sensor module is a dedicated environmental sensing solution built around the industry-standard Sensirion SHTC3 chip. It delivers calibrated, digital I2C output for both temperature and relative humidity, eliminating the need for external signal conditioning. The module is engineered for the WisBlock modular IoT system, allowing direct connection to a WisBlock Core processing and communication unit.

Its extended operational range from -40°C to +125°C makes it suitable for demanding industrial, agricultural, and outdoor applications. The module’s architecture supports full power-down between measurement cycles, significantly extending battery life in wireless sensor networks using protocols like LoRaWAN® and Bluetooth Low Energy (BLE). When combined with other WisBlock modules, such as barometric pressure sensors, it forms a complete, compact environmental monitoring station.

Key Features

  • High-Precision Sensirion SHTC3 Core: Features a factory-calibrated digital sensor with excellent long-term stability and low hysteresis.
  • WisBlock Modular Design: Uses the standardized WisBlock connector for instant plug-and-play functionality with RAKwireless core boards and other sensor modules.
  • Optimized for Low-Power IoT: Extremely low active and sleep currents enable multi-year operation on coin-cell or small lithium batteries.
  • Robust Environmental Rating: Operates across a -40°C to +125°C temperature range, ensuring reliability in extreme conditions.
  • Digital I2C Interface: Provides a clean, digital communication protocol (I2C) for reliable data acquisition and easy integration with microcontrollers.
  • Compact and Lightweight Build: Miniature 10mm x 11mm PCB footprint and minimal weight allow for integration into space-constrained designs.
  • Comprehensive Software Support: Backed by ready-to-use Arduino libraries and application examples for rapid prototyping and deployment.

Applications

  • Wireless IoT Environmental Monitoring: Deployment in LoRaWAN® or BLE mesh networks for remote temperature and humidity logging in warehouses, greenhouses, and smart buildings.
  • HVAC and Building Automation: Providing precise climate feedback for energy management systems and occupancy-based control.
  • Industrial Condition Monitoring: Monitoring environmental conditions within electrical cabinets, manufacturing equipment, and storage facilities.
  • Portable Weather Stations: Combining with other WisBlock sensors (pressure, light) to create compact, battery-powered field-deployable weather units.
  • Asset and Logistics Tracking: Monitoring temperature and humidity conditions during the transportation of sensitive goods.

Technical Specifications

Item TypeTemperature and Humidity Sensor Module
Model Number / NameRAK1901
Sensor ICSensirion SHTC3
Temperature Measurement Range-40°C to +125°C
Temperature Accuracy±0.2°C (typical)
Humidity Measurement Range0% to 100% RH
Humidity Accuracy±2% RH (typical)
Communication InterfaceI2C
Operating Voltage1.62V to 3.6V (via WisBlock bus)
Operating Temperature-40°C to +125°C
Dimensions (L x W)11mm x 10mm
WeightApprox. 0.3g
CompatibilityRAKwireless WisBlock Core Modules (e.g., RAK4631, RAK11300)
Primary ApplicationsIoT Environmental Monitoring, Smart Agriculture, HVAC Control, Weather Stations, Asset Tracking

Frequently Asked Questions

What is the operating voltage range for the RAK1901 module?

The RAK1901 is powered through the WisBlock connector bus. Its integrated Sensirion SHTC3 sensor operates from 1.62V to 3.6V. Ensure your WisBlock Core board (like the RAK4631) supplies power within this range. The module is not designed for direct 5V logic and must be used with compatible 3.3V WisBlock systems.

How do I connect and read data from the RAK1901 sensor?

The RAK1901 connects physically via its 4-pin WisBlock connector to a compatible WisBlock Core board. Communication is performed digitally over the I2C interface. You must use the provided RAKwireless Arduino library or the Sensirion SHTC3 driver to send measurement commands and read the temperature and humidity data registers from the sensor.

Can I use the RAK1901 as a standalone sensor with an Arduino or ESP32?

No, the RAK1901 is designed specifically for the WisBlock ecosystem and uses a proprietary physical connector. It cannot be directly wired to standard microcontroller breakout boards. For standalone use with Arduino or ESP32, you would need a Generic SHTC3 breakout board with standard pin headers.

What is the power consumption of the RAK1901 in sleep mode?

The RAK1901 leverages the ultra-low-power features of the SHTC3 sensor. In sleep mode, the sensor itself draws less than 0.2 µA. Furthermore, the entire WisBlock system allows you to completely power down the module via software control on the Core board, reducing the system's sleep current to virtually zero, which is critical for battery-powered applications.

Package Includes

  • 1 x RAK1901 WisBlock Temperature and Humidity Sensor Module

Additional Information

Weight 0.0003 kg
Dimensions 1.1 × 1 cm