Macnman LoRaWAN Smart Relay Controller w/ Dual HF152F Relays

First, connect the AC mains power (100-240V) and your load wires to the appropriate screw terminals. Power on the device. Using a compatible LoRaWAN network server (like The Things Stack) and gateway, activate the device via its DevEUI, AppEUI, and AppKey (typically found on a label or in the manual). The controller will then join the network, and you can send downlink commands (like hex payloads for relay on/off) from your application server to control the relays remotely.

When idle and connected to LoRaWAN, the controller consumes minimal current, but its primary design is for mains operation (100-240V AC). The internal power supply provides a 5V regulated output. It is not designed for standalone battery operation, as the AC-DC conversion and relay coils require significant power. For battery-powered relay control, a DC-input LoRaWAN module with low-current relays would be more appropriate.

Yes, the two HF152F relays can be controlled independently. The specific command structure (the hex or base64 payload format) will be defined in the device's documentation or application firmware. Typically, you would send a downlink message containing a byte where specific bits correspond to the state of Relay 1 and Relay 2. You must decode and implement this payload format in your LoRaWAN application server code to achieve independent switching.

NO (Normally Open) rating is 16A @ 250VAC, meaning the relay contacts are open when de-energized and close when activated, suitable for turning loads ON. NC (Normally Closed) rating is 7A @ 250VAC, where contacts are closed when de-energized and open when activated, used for breaking a circuit. You choose the terminal (NO or NC common) based on whether you need fail-safe (NC) or standard (NO) operation. Ensure your load current does not exceed the respective rating for the chosen configuration.