ADEMCO Vista-20HW Troubleshooting Guide download pdf (Page 48)

This section provides instructions for the connection of an optional remote _

4146 keyswitch for remote arming and disarming of the system, and the

programming necessary when a keyswitch is used. Also included is a

description of how the keyswitch operates in the system.

Installing the Keyswitcb

The remote 4146 keyswitch (with red and green LEDs to indicate status) is

connected to zone 7.

Note that you can use a keyswitch in one partition only.

Remote Keyswitch Connections

Connect the 4146 keyswitchs normally open momentary switch to zone 7

terminals (18 and 19). Remove the 2000 ohm EOL resistor if connected

across zone 7 terminals.

Connect the Red and Green LEDs to pins 7, 8, and 9 on the 9-pin

connector, using a 4142TR cable as shown in Figures 17 (A) and (B).

Connect a 2000 ohm EOL resistor across the momentary switch.

You can wire an optional closed-circuit tamper switch (model 112) in

series with the zone: If the switchplate is then-removed fi-om the wall, the

tamper will open, disabling keyswitch operation until the system is next

disarmed fi-omthe keypad.

If the tamper (or zone 7 loop wires) is opened when the system is armed, an

alarm will occur.

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ADEMCO Vista-20HW Troubleshooting Guide Page 48