P-9940A
The GST P-9940A is an RS485 Class A network card serving as an optional accessory for GST200 series fire alarm control panels and GST-NRP00 repeaters, enabling redundant ring network topology with peer-to-peer connectivity.
Specifications Table
| Specification | Details |
|---|---|
| Part Number | P-9940A |
| Description | RS485 Class A network card for ring networks |
| Communication | RS485 protocol, 2400 baud rate |
| Network Capacity | Up to 32 GST panels |
| Distance | Max 1200m between nodes |
| Cable Requirement | ≥1.0 mm² fire-rated twisted pair |
| Interfaces | 2 photoelectrically isolated RS485 ports |
| Connection Type | Class A loop (redundant on cable break) |
| Compatibility | GST200N-1/2, GST-NRP00 |
