868 MHz 4-Channel Relay LoRa Receiver, Assembled and Tested – FT1359KM

LoRa receiver with four relay outputs

The FT1359KM is a receiver for remote ON/OFF commands, based on the Aurel XTR-8LR-DEC radio module. It has 4 relay outputs and operates in the 868.3 MHz ISM band, with LoRa modulation and rolling code encoding.

Version already assembled and tested. To operate, it requires a compatible transmitter, such as the XTR-8LR-4ZN remote control, not included . LoRa modulation alone does not guarantee pairing with other types of transmitters.

Main features

• Four channels to activate remote loads via relay.
• Half-duplex communication with the possibility of feedback on the compatible remote control.
• Output mode can be set via DIP switches SET1 and SET2.
• Association via self-learning or manual assignment of keys to outputs.
• Declared range up to 8 km in favorable conditions and as the crow flies; actual distance depends on obstacles, installation, and radio environment.

Mode of operation

• Monostable: the relay remains active while the transmitter button is pressed.
• Bistable: Each press of the button changes the state of the output.
• Monostable with 0.5 s delay: the output remains active during the press and for a further 0.5 seconds after the release.

The settings are read upon power-up. To change modes, turn off the power, adjust the SET1 and SET2 DIP switches, and turn the device back on.

Self-learning remote control

Power the board with 5 V DC using a power supply capable of supplying approximately 300 mA .

1. Press and release the button on the XTR-8LR-DEC module: the LED flashes rapidly for 10 seconds.
2. Within this range, press a button on the remote control to be paired.
3. Memorization is confirmed by the LED staying on for 1 second, or for 0.5 seconds if the transmitter was already paired.

Manual key binding

1. Enter learning mode by pressing and releasing the button on the module.
2. Press the button again within 10 seconds: the LED remains lit steadily.
3. Press again to select OUT1, confirmed by a flash. After the LED returns to a steady state, further presses select OUT2 and subsequent outputs.
4. Once the output is selected, press the remote control button you want to pair. The LED will turn off, turn back on, and confirm with a number of flashes corresponding to the selected output.

The manual pairing described above works in monostable mode. Repeat the procedure to pair other buttons or remote controls.

Technical specifications

• Reference: FT1359KM.
• Radio module: Aurel XTR-8LR-DEC.
• Modulation: LoRa, half-duplex.
• Frequency: 868.3 MHz.
• Board power supply: 5 V DC.
• Outputs: 4 relays, maximum declared load 1 A.
• Coding: rolling code.
• Delivery: Receiver assembled and tested; transmitter not included.