| 摘要 |
A connection apparatus for a fire alarm is composed of a socket portion intended to be secured in the space or area which is to be monitored and a fire alarm insert connectable by means of electrical and mechanical connection elements with the socket portion. At least three connection elements are arranged about the circumference of the socket portion. At the circumference of the side of the fire alarm insert confronting the socket portion there are provided contact springs. The connection elements and grooves come into engagement with one another in a certain manner. During a first partial rotation of the fire alarm insert there is established the mechanical connection. During a subsequent second partial rotation of the fire alarm insert, in the same direction as the first partial rotation, there is established the electrical connection. |
