The C4 is the latest compact controller from Progeny. C4 can work alone as a combined controller Keypad or Controller RFID reader or both. C4 can also be used with an externally connected Keypad, Reader or Reader-Keypad.
The embedded proximity reader works with standard Dark Crystal credentials. It also has all the feedback and brightness controls found with a P4 system.
C4 Compact Controller Keypad & Reader