ABP is a way to connect a LoRaWAN sensor to a network without a join procedure. The device address and encryption keys are written into the firmware before it ships, so it connects immediately on power-up – useful in deep concrete buildings where a standard join signal cannot reliably reach a gateway.
The trade-off is security. Keys never rotate in ABP, so if a device is compromised, the session stays exposed until someone physically updates the firmware. For that reason, OTAA is the recommended default for all new deployments. ABP is a fallback – not a first choice.
- No join procedure – connects instantly on power-up
- Encryption keys are static and never rotate
- Physical firmware access required to change keys if compromised
- Use only where OTAA join signals cannot reliably reach the network server
In the catalogue: LoRaWAN devices