Panasonic KX-TDA0190 Optional 3-Slot Base Card

Panasonic KX TDA0190 3 Port Options Card (OPB3) Compatible with KX-TDA100, KX-TDA 200, KX-TDA 600, KX-TDE100, KX-TDE 200, KX-TDE 600 Panasonic Phone Systems Equipped with 3 connectors to receive 1 or more of the following Optional Daughter cards: 4 Channel Message Card KX-TDA0191) (MSG4) 4 Port Doorphone/ Door Opener Card KX-TDA0161 (DPH4) 16 Port Echo Cancellation Card KX-TDA0166 (ECHO16) 4 Circuit Input/Output Card Contact Closure Card KX-TDA0164 (I/O) Card requires 1 free slot