Our Model 503PC plugs directly into the 36-pin Centronics\ae port of a parallel printer. Use the 503PC along with the 503P for complete parallel line protection.

- Model 503P Protects All 25 Pins on the DB-25 Parallel Interface
- Model 503PC Protects 34 Pins on the Centronics\ae Parallel Interface
- Surge Energy Diverted to Chassis Ground through Connector Shells
- Surge Handling Capacity of 1.5k Watts (Both Models)