LoRa 30A Relay Module - 868MHz

This 30A Lora Relay is a relay module that could be controlled by Lora, with max current 30A/240V. Based on RFM98W, it supports max 4~5 km Lora communication.

This Lora relay module is preloaded with the Arduino Pro Mini(3.3v 8M) bootloader and simple demo firmware Lora Relay V1.1. You can freely change/update the firmware with Arduino IDE, with a common UART tool (Note that if there no DTR in your UART tool, you will need to press reset button to reset the controller Mega328P manually).

Quick Spec

• ATMEL Atmega328P: High Performance, Low Power Atmel®AVR® 8-Bit Microcontroller
• Speed Grade: 20Mhz
• Flash: 32 Kbytes
• RAM: 2 KBytes
• EEPROM: 1 KBytes
• DC 12V Input
• Max Switch Current: 30A
• Max Switch Voltage: 250VAC
• Max Switch Power: 7200VA
• Relay Contact Form: SPDT
• Relay Coil Rated Voltage: 12V DC
• Relay Coil Rated Current: 75mA
• Relay Coil Rated Resistance: 160Ω ±10%
• Relay Coil Pick-up Voltage: 75% Max
• Relay Coil Dropout Voltage: 10% Min
• Relay Coil Maximum Voltage: 130% Max
• Mechanical Service Life: 100,000 operations min. (at 1,800 operations/hour)
• Electrical Service Life: 10,000,000 (at 1,800 operations/hour)
• Temperature Range: -40 ~ +85°C
• Dimensions: 83 x 49.8 x 29.4mm
• Weight: 53g

Board Layout

1. Screw Terminal: Output
2. PWR: Power LED
3. Lora Module
4. Status: Status LED
5. U2: Atmega328P
6. J10: UART
7. Reset Button
8. DC: DC12V IN
9. RL: Relay LED
10. Relay: 30A Relay

Connecting to the Arduino IDE

From the top Arduino IDE menu, select Tools-> Board-> Arduino Pro or Pro Mini

From the top Arduino IDE menu, select Tools-> Processor->Atmega328P(3.3V,8Mhz)

After inserting the USB-to-UART tool to you PC, select the related Port (port my differ to that of the image)

Download the RadioHead file, click Add .ZIP Library, select RadioHead

Wiring Diagram

Resources

• Product Page
• Product Wiki
• GitHub
• RadioHead File

Shipping List

• 1 x LoRa 30A Relay Module - 868MHz