RFM68W-868-S2

RF Transmitter Overview

The RFM68W-868-S2 is a Sub-GHz ISM band transmitter module by RF Solutions. It operates at 868 MHz with FM modulation, delivering up to +13dBm output power and -102dBm receiver sensitivity. The module supports data rates up to 57.6kbit/s via an RS232 interface. It functions on a 2.4V to 3.6V supply, measures 31.5 x 11 x 2.5mm, and withstands temperatures from -40°C to +85°C.

RF Transmitter Feature Summary

• Integrated FM modulation for reliable short-range communication
• Low power consumption suitable for battery-operated devices
• Compact surface-mount design for easy PCB integration

RF Transmitter Applications

• Garage openers
• Remote control systems
• Security systems

RF Transmitter Procurement Notes

Verify the specific manufacturer origin, as this part number appears in catalogs for both RF Solutions and Hope Microelectronics. Confirm that the RS232 interface matches your system requirements, as some variants may differ. Ensure the operating voltage range of 2.4V to 3.6V aligns with your power supply design before finalizing procurement.

RF Transmitter Selection Notes

Select this module for applications requiring simple, low-cost transmission over short distances. Its integrated nature reduces external component needs. Consider the limited data rate when choosing between this and higher-speed alternatives like LoRa modules. Verify the physical dimensions fit within your enclosure constraints.

RF Transmitter Part Context

This component belongs to the RFM68W series of ultra-low-cost ISM transmitters. It is designed for basic telemetry and remote control tasks where high throughput is not required. The series offers various frequency options, with this specific model optimized for the 868 MHz European ISM band.

RF Transmitter Replacement Considerations

The RFM68W-868S2 is listed as a similar product but lacks confirmed substitute part numbers in public documentation. Cross-reference pinouts and interface types carefully if considering alternative manufacturers.