Specifications

Alto 818 Installation and Operation
4-10 P/N 66109074001 Rev. D
Connectors labeled SHIELD RETURN, PWR, GND, B and A are used for S-Net connections.
The MP+ and the MP- terminals are used for an auxiliary SE 818 tamper input. If this function
is not used, a 2K-ohm resistor must be connected across these pins. The system will generate
a TAMPER signal at any resistance other than 1520 to 2600 ohms.
All S-Net node devices have a hexadecimal address switch which must be set uniquely as part
of the installation procedure. Valid addresses are 1 through 8, hexadecimal. This means that
there can be a maximum of 8 readers of a specific type. However, the address numbers may
be repeated for a different type of reader, i.e., there may be a digital reader with address 2 and
an VIP2 with address 2. The address setting designates the door number in the database.