This page documents AT commands for configuring relay or multi-hop networking in HaLow firmware 2.x modules.

Query:

AT+R_SSID=?

Set Relay SSID:

AT+R_SSID=relay_ssid_example

Response:

+R_SSID:relay_ssid_example
OK

Notes:

• Sets the downstream SSID for the relay to connect to the next-level STA
• Required for multi-hop network connections

Query:

AT+R_KEY=?

Set Relay Key:

AT+R_KEY=87654321

Response:

+R_KEY:87654321
OK

Notes:

• Key must be ≥ 8 hexadecimal characters
• Used for encrypting relay connections to downstream STA
• If key is too short, command returns: ERROR need 8 bytes at less

* Relay commands are only relevant in APSTA (relay) mode. * Ensure the relay module’s WIFIMODE is set to `apsta` and basic network parameters are configured before setting relay SSID/key. * Proper relay configuration allows STA devices to connect through intermediate nodes for extended coverage.