COMOK AC 220V 100mm 4inch Dia Schools Fire Alarm Round Shape Electric Bell UC4-100

[Music] most flow switches contain two sets of switch contacts one can be used to activate a fire panel and the other can be used to operate a local alarm such as a 120 V AC bell or horn the contacts are completely independent of each other and have the same rating so it does not matter which switch gets used for what purpose wiring a flow switch to ring a bell is just like wiring a light switch to turn on a light the flow switch is the light switch and the Bell is the light to do this simply switch the hot wire through the normally open contacts of the flow switch out to the Bell the neutral wire does not connect to the flow switch but instead goes from the service panel straight to the white wire of the bell the flow switch is just a mechanical switch it does not require power to operate so do not connect both the hot and neutral wires to the flow switch first observe all applicable s