Specifications
WSE • 3/21/97 16720 — 5 Alto 818 Access Control System
d. Mounting:
1) The Controller shall be capable of being wall mounted.
2) All wiring connections shall be provided at the top and right side of the unit for ease of
access.
3) The front cover, containing 6 self-contained screws, shall remove for access to internal
switches and parts.
e. Power:
1) Source: Power is provided via wiring from a Power Supply unit (see section 2 or 3).
2) Consumption: 650 mA at 16 volts AC and 500 ma at 25.2 volts AC input (typical).
3) Battery: A low voltage battery shall maintain the internally stored database setup when
no power is available to the controller.
f. Wiring:
1) Host, terminal or printer: 2 (two) 9-pin female Phoenix.
2) RS-485 (for Keypads and/or digital proximity readers): Phoenix.
3) 20mA communications to other Controllers or to host system: Phoenix.
4) Power supply: Phoenix.
5) Output relays: Phoenix.
6) Annunciator (778): 15-pin D-subminiature.
g. Communication:
1) ASCII encoded data: 2 (two) RS-232 data I/0 ports.
2) Host communication: 1 (one) RS-232 port shall provide for Host communication utilizing
HOST or SEEP Protocol.
(i) Note: Both of the above ports shall be usable for a terminal / printer.
3) Networking with other Controllers and Host systems: 1 (one) 20mA data I/O port for
connecting to other Controllers and Host systems.
h. Feedback: LED status lights indicate:
1) Controller CPU operational status.
2) Lock status.
3) Communication status.
4) Alarm status.
5) Readiness of entry Keypad and program mode.
i. Diagnostics: LED status lights shall indicate:
1) Operational status of the controller.
2) Door status and lock status of controlled entries.
j. Self-protection: The Controller shall have inputs to detect:
1) Power input failures.
2) Controller tampering.
k. Manufacturer: Westinghouse Security Electronics Model [ALTO 818SX] or [ALTO 818SC].
2. Multiple Switch Monitor (774A):
a. General:
1) The 774A Multiple Switch Monitor (MSM) is a single board monitor point input device
[with enclosure] for connection to 4 dry contacts normally opened or normally closed.
MSM supports higher voltages for extended read ranges.