Thursday, 29 May 2014

How to Add Hard-wired detectors to a Wirefree Alarm System


One of the negatives in using wirefree Security Systems is the poor range of detectors available. With hard-wired alarms , sensors are usually compatible and just about any detector could be attached to just about any control panel. For instance, say you need a roller shutter magnetic contact fittig to a garage door but signalled to your already fitted wirefree alarm. None of the major wireless alarm manufacturers have a wireless roller shutter contact: as a result,  a hard-wired detector will have to be used.

A lot of wirefree control Panels have one or more hard-wired zones for connecting hard-wired detectors. This enables you to connect a new detector to the control panel using multicore wire.

However for neatness you can connect the detector wirelessly.

The methods are described below.

Connecting a new Detector to the wirefree control Panel

Prior to using this method, check that there's one or more hard-wired input in the wirefree control panel. If the hard-wired detector needs electrical power (e. g. PIRs, Break-glass), and then check to see if an auxiliary power supply can be found in the control panel. When a power supply in the control panel isn't available, then the detector will have to be run off a battery or possibly a 12v power supply.

Wirelessly Linking a new Non-Powered Detector

Common non-powered sensors are typically products just like magnetic contacts and PA Devices. These can be wired directly to a wireless transmitter which is compatible with the existing system. Using the Visonic Powermax range of wirefree alarms, there are a pair of wirefree transmitters we can use. This MCT-100 is a battery-operated transmitter and contains 2 hard-wired inputs and also 2 wirefree outputs. each output van be learnt to a wirefree zone on the control panel. 
Additionally the MCT-302 magnetic contact incorporates 1 hard-wired input which can be used to connect a hard-wired detector.

Wirelessly Linking a new Powered Detector

In order to use a powered detector wirelessly, a battery or local power supply is needed to power the detector.

The example above uses the Powermax equipment but most major alarm manufacturers have similar equipment.

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