Comelit Addressable Manual Call Point with Isolator, Red 41PAM000

What this call point does

A manual call point lets anyone who sees a fire start the alarm by hand, without waiting for a detector to react.

This one belongs on an addressable system, where the panel knows each device individually. It suits installers and maintenance teams working on those systems.

How it works

• Pressing it: the user presses the indicated point on the front, and the unit signals the control panel.
• Putting it back: the element is plastic and resettable, so there is no glass to clear up. The key element comes supplied.
• The isolator: As a rule, isolators split an addressable loop into sections, so a short circuit takes out only part of the wiring and not the whole loop.

Where to use it

It is made for wall mounting. Call points usually sit on routes out of a building and beside final exits, and the system design sets their exact positions.

Treat it as an indoor device unless your panel maker or designer confirms otherwise.

What the figures mean in practice

• Standby use: the figure here is consumption during communication, so use your panel maker's loop calculator for the full load.
• Temperature and humidity: compare the operating limits with the space, and do not assume an outdoor or weatherproof rating.

Planning your system

The job also needs an addressable control panel that accepts this device. A protocol is the digital language a panel and its devices must share, so settle that with the panel's maker first.

As a rule, test every call point at the intervals your system design and maintenance plan set out.

Standards explained

• EN 54-11: the European standard for manual call points.
• EN 54-17: the European standard for short-circuit isolators, which is why it sits alongside the call point standard here.