How to Install Electric Bells, Annunciators, and Alarms. Including Batteries, Wires and Wiring, Circuits, Pushes, Bells, Burglar Alarms, High and Low Water Alarms, Fire Alarms, Thermostats, Annunciators, and the Location and Remedying of Troubles

CHAPTER II

Chapter 229 wordsPublic domain

The single stroke bell--The shunt bell--The differential bell--The continuous ring bell--The waterproof bell--Forms of gongs--The buzzer--Long distance bells--The relay--The push--Three point or double contact push--Floor push--Door pull--Indicating push 9