This document introduces the QFMT5 and QFMR5 data link modules, which are miniature UHF radio modules that enable the implementation of a simple telemetry link up to 300 metres, and at data rates of up to 128Kbit/s.
The QFMT5 transmitter and QFMR5 receiver modules (T5/R5) are miniature UHF FM radio modules that enable simple telemetry links up to 300 m with data rates up to 128 kbps. They are suited for vehicle alarm systems, remote gate controls, garage door openers, and other security or industrial monitoring applications.
The document includes detailed electrical characteristics, pin‑out tables, maximum ratings, antenna design guidelines, mechanical dimensions, ordering information, and example application circuits for both the transmitter and receiver. Contact details for RF Solutions Ltd. are provided for further assistance.
| Supply voltage (transmitter) | 3.0 V – 5.5 V |
|---|---|
| Supply current (transmitter) | 12 mA |
| RF output power (transmitter) | +12 dBm |
| Data rate (transmitter) | 50 kbps |
| Operating temperature (transmitter) | -20 °C to +55 °C |
| Supply voltage (receiver) | 4.5 V – 5.5 V |
| Supply current (receiver) | 48 mA |
| RF sensitivity (receiver) | < -107 dBm |
| IF bandwidth (receiver) | 230 kHz |
| Maximum RF input (receiver) | 20 dBm |
The transmitter operates from –20 °C to +55 °C.
The receiver requires a supply voltage between 4.5 V and 5.5 V.
Both modules support data rates up to 128 kbps.
The transmitter can output up to +12 dBm of RF power.