4
Introduction
The Crypto-Lock Model CC-8521A is a single door access control system providing
keypad control using a single 3-5 digit PIN code. Typical installation is illustrated in
Figure 1.
The system includes a built-in 12VDC and 24VDC, 4A power supply to power electric
strikes and magnetic locks, eliminating the need for a separate power unit. It provides
the high in-rush currents required to reliably open heavy-duty locking devices such as
Von Duprin* rim latch retraction units and Sargent & Greenleaf Brute* electric locks.
The control unit contains the logic board, power supply board and power transformer. It
can also house two optional 12V, 7AH sealed lead acid batteries (not included) and
maintain them at full charge. Audible and visual warnings will occur when the charge
level is low.
The weatherproof, 10-button, stainless steel, spy-proof keypad unit includes a green
LED which illuminates when the lock is released. A visitor button on the keypad
activates an annunciator in the control unit and generates output signal for an optional
external audio or visual device (not included).
*Von Duprin is a registered trademark of the Ingersoll-Rand Company; Brute is a registered trademark of
Sargent & Greenleaf, Inc.
