Executone, std-and pillow speaker stations.
Dukane std (non-pillow speaker station)
Picker Briggs std. and pillow speaker
Edwards - Altec std. station
Sylvania std. station
Auth - All stations with no holding relays
Normally open contacts...Pressing Bulb
makes contact that is maintained until
reset button (on top of plug at wall
station) is pushed down. No system relay
is required. Replaces pull chains or string
actuated type. Electrical plug has tip
and sleeve jack. Rated 1/3 amps 24 volt
Suitable for use in oxygen atmosphere.