RFM95W-868S2R

The RFM95W-868S2R is a compact, low-power, long-range transceiver module designed for wireless communication in the sub-GHz frequency band, specifically operating at 868 MHz. Manufactured by HOPERF, this module is part of the RFM95 series, which is known for its versatility and efficiency in various IoT applications, including smart agriculture, home automation, and remote sensor networks.

Key Features:

1. Frequency Range: The RFM95W operates in the 868 MHz ISM band, which is commonly used in Europe for low-power, long-range wireless communication.

2. Modulation: It supports various modulation schemes, including LoRa (Long Range) and FSK (Frequency Shift Keying), allowing for flexible communication options depending on the application requirements.

3. Range: The module is capable of achieving a range of up to 15 kilometers in open space under optimal conditions, making it suitable for long-distance communication.

4. Power Consumption: The RFM95W is designed for low power consumption, with a sleep mode that significantly reduces energy usage, making it ideal for battery-operated devices.

5. Data Rate: It supports a wide range of data rates, typically from 0.3 kbps to 300 kbps, allowing for adaptability based on the specific needs of the application.

6. Interface: The module features a simple SPI (Serial Peripheral Interface) for easy integration with microcontrollers and other digital devices, facilitating straightforward communication and control.

7. Antenna Connection: The RFM95W-868S2R includes a U.FL connector for attaching an external antenna, which can enhance the range and performance of the module.

8. Size and Form Factor: The module is compact, typically measuring around 20mm x 20mm, making it easy to integrate into various designs without taking up significant space.

9. Operating Voltage: It operates within a voltage range of 1.8V to 3.7V, allowing it to be powered by a variety of battery types, including lithium-ion and lithium-polymer batteries.

10. Temperature Range: The module is designed to function effectively in a wide temperature range, typically from -40°C to +85°C, ensuring reliability in diverse environmental conditions.

Applications:

The RFM95W-868S2R is widely used in applications such as:

• Smart Metering: For remote monitoring of utilities like water, gas, and electricity.
• Environmental Monitoring: Collecting data from sensors deployed in various locations.
• Agricultural Sensors: Enabling communication between soil moisture sensors and central systems.
• Home Automation: Connecting devices like smart locks, lights, and thermostats.

Conclusion:

The RFM95W-868S2R from HOPERF is a robust and versatile wireless transceiver module that offers long-range communication capabilities with low power consumption. Its adaptability to various modulation schemes and ease of integration make it an excellent choice for developers looking to implement wireless solutions in their projects.