Introduction
8 AC-A4x Installation and Programming Manual
1. Introduction
The AC-A4x access control units are indoor standalone controllers.
The units accept up to 500 users and allow entry via a personal
identification number (PIN) and/or by presenting a proximity card
1.1 Reader/Controller Types
The two types of units described in this manual are:
Keypad Type PIN Proximity
AC-A41
Standard
AC-A42
Standard
1.2 Key Features
Built in keypad for PIN code entry
Built-in proximity card reader (125 KHz ASK modulation) (AC-A42
only)
Auxiliary Input and Auxiliary Output
Eight Auxiliary Modes including Door Ajar, Forced Door, Shunt,
Door Monitor, and Normal/Secure
Internal buzzer
Comes with security screw and security screw tool
Two status/programming interface LEDs
Three user levels (Normal User, Secure User, Master User)
Three modes of operation (Normal Mode, Bypass Mode, Secure
Mode)
"Code Search" feature simplifies maintaining user codes
Input for REX button
Lock Strike Electronic Relay with built-in suppressor protection
Comes with mounting template for easier installation
Built-in case and back tamper