It connects to the Syncro panel either via a direct serial connection (RS232), USB (on newer panels), or through a network interface for large, networked systems.
| Protocol | Manufacturers | |----------|----------------| | Apollo XP95 | Apollo (legacy) | | Apollo Discovery | Apollo (EN54) | | Hochiki ESP | Hochiki (ESi, CDX) | | Argus Vega | Argus | | Nittan | Nittan (rare) | Kentec Syncro - Loop Explorer Software