Description and Technical Data:
1) Overview/Key Features
The REYAX RYLR998_M4 is an 868/915 MHz LoRa® transceiver module designed for long-range, low-power wireless communication in embedded and industrial IoT applications. It uses a Nuvoton MCU with a Semtech LoRa® engine and is controlled through UART AT commands. The M4 version is intended for applications using an external antenna connection rather than the built-in antenna arrangement of the standard RYLR998.
Key features include:
- 868/915 MHz LoRa® operation
- Long-range spread-spectrum communication
- High interference and blocking immunity
- Up to 22 dBm RF output power
- RF sensitivity down to −129 dBm
- UART control through AT commands
- Transparent communication mode
- Smart receiving power-saving mode
- Standard sleep mode
- 1.8–3.6 V supply range
- Operating temperature from −40 °C to +85 °C
- Compact DIP-style module format
- External RF connection through an I-PEX MHF4 connector
Minimum orders apply. NCNR non cancelable - non returnable product. B2B customers please contact Mirifica Industrial for volume quotes. Mirifica Industrial ships world-wide.
2) Tech Specs
| Specification | Details |
|---|---|
| Product type | LoRa® transceiver module |
| Model | RYLR998_M4 |
| Frequency range | 820–960 MHz |
| Nominal frequency | 868/915 MHz |
| Supply voltage | 1.8–3.6 V |
| Typical supply voltage | 3.3 V |
| RF output power | −20 to +22 dBm |
| RF sensitivity | Down to −129 dBm |
| Maximum RF input level | 10 dBm |
| Frequency accuracy | ±10 ppm |
| Filter insertion loss | 1–3 dB |
| Transmit current | Typical 140 mA at +22 dBm |
| Receive current | Typical 17.5 mA |
| Sleep current | Typical 15 µA |
| Smart receiving power-saving current | 0.02–5.5 mA, depending on duty-cycle settings |
| UART baud rate | 300–115200 bps |
| UART format | 8-N-1 |
| Digital input high level | 0.7 × VDD to VDD |
| Digital input low level | 0–0.3 × VDD |
| Flash endurance | 200,000 erase/write cycles |
| Antenna connection | External antenna through I-PEX MHF4 |
| Approximate weight | 2 g |
| Operating temperature | −40 °C to +85 °C |
Antenna, RF layout, and operating frequency must comply with regional radio regulations.
3) Tech Support/Dokuments
Web available technical information usually covers the RYLR998/RYLR998_M4 electrical characteristics, RF performance, power consumption, UART interface, AT commands, transparent communication mode, sleep functions, smart receiving power-saving mode, RF connection, module integration, and LoRa® mesh-network implementation.
4) Related Product Suggestion
The manufacturer lists the standard RYLR998 as a related product. It provides comparable 868/915 MHz LoRa® functionality with a built-in antenna, whereas the RYLR998_M4 is intended for an external-antenna implementation. lemosint.com1
5) Downloads/Links
Mirifica Industrial can supply any Reyax product. Minimum orders apply.
6) What is in the package
1 x product