Bell only alarms are alarms that will have a number of sensors in your home and siren fixed to the outside of your property.

Dummy security systems are a dummy box fixed on the outside of your property, which gives the impression that there is an active alarm system that is installed. Some dummy boxes come with a strobe light, which gives added assurance that there is an active alarm system installed in the property.
 

Here you will find a brief list of the security devices available in the UK .With what we beilive are invaluble informaition to help prevent you from losing money on your security system

Systems should be monitored by Alarm Receiving Centres (ARCs), Remote Video Response Centres (RVRC) and System Operating Centres (SOC). All centres must comply with BS 5979 (Cat II), or BS EN 50518 and BS8591 (Cat II).