Home
Security covers topics such as security cameras, home
alarms, fire, smoke and motion sensors, and other security systems
and equipment. It need not cost much to protect your home and
you do not have to be an expert to fit a security system. Your
initial decision is to choose between a hardwired system or a
wireless system that uses low power radio circuits to connect
the sensors to the main alarm unit. Each system has its own features
and benefits.
HARDWIRED
SECURITY SYSTEMS
- Pros -
Hardwired
alarm systems rely on simple switching circuits to operate,
so they are easy to understand. They do not need complex electronics,
so they can be inexpensive to buy. They run from one main power
supply, so they do not need several batteries periodically changing.
Wired alarm systems do not use radio signals, so their arm and
disarm codes cannot be ‘cloned’ by enterprising
technological criminals.
- Cons -
Hardwired alarm systems need to have cables run from the main
control panel to each window, door or motion sensor and there
are a number of ways to connect them together for correct operation.
Care must be taken to keep the wiring well away from any place
where burglars could tamper with it, disconnecting sensors from
the system.
WIRELESS
SECURITY SYSTEMS
- Pros -
Wireless alarm systems have no cables connecting sensors to
the main control panel, so they are extremely easy to fit and
do not create redecoration work. Nearby sheds or garages can
be covered without the need for external cables. They are controlled
by convenient keyfob remote control units, with no complex disarm
codes to remember. Some wireless systems even have solar-powered
wireless external bellboxes.
- Cons -
Each sensor has its own battery and these must be monitored
and changed periodically, but many wireless control systems
will let you know when a battery is getting low. Some wireless
systems still use a wired external bellbox connection for added
reliability. With very specialised receiver/decoder equipment,
it is possible (though very unlikely) that transmitted arm and
disarm codes may be ‘grabbed’ and ‘cloned’,
or transmissions may sometimes be jammed so that the panel cannot
receive sensor alarm signals.
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