Specifications

2-1
SECTION 2: SYSTEM
DESCRIPTION
This section describes the Alto 818 Access Control Unit (ACU) and the hardware devices
available to make up a complete access control and alarm monitoring system. Current WSE
hardware which may be used with Alto 818 systems is listed in Table 2-1. Older WSE products
may also be compatible; contact WSE Customer Service for inquiries. A system block diagram
showing an example of a system application is shown in Figure 2-1.