Which of the following is not part of fire alarm system?Alarm valveManual call pointsControl modulesDetectors

The question is asking which item from the list is not typically part of a fire alarm system. The options are:

1. Alarm valve
2. Manual call points
3. Control modules
4. Detectors

Let's go through each option:

1. Alarm valve: This is typically part of a fire sprinkler system, not a fire alarm system. Its function is to control the flow of water in the sprinkler system.

2. Manual call points: These are definitely part of a fire alarm system. They are devices that allow people to manually trigger the fire alarm in case of a fire.

3. Control modules: These are also part of a fire alarm system. They are used to control other parts of the system, such as the alarm sounders or the fire doors.

4. Detectors: These are a crucial part of any fire alarm system. They detect signs of a fire, such as smoke or heat, and trigger the alarm.

So, the item that is not typically part of a fire alarm system is the Alarm valve.