The No. 4146 Key switch includes an N.O. (normally open) momentary contact (spring loaded) lock switch with high security (round) keys. It may be used to remotely arm and disarm some burglary and fire alarm panels. Also included are 2 indicator LED's (1 red and 1 green) for annunciating the status of a control panel that has provision for operating them.
Does not work with$199 kit, only Honeywell Vista Alarm Controls
