We surveyed a property site in the South of England last week and what we saw really did shock us the incumbent security contractors equipment is hard wired not only the detectors but mains power as well.
Never seen extension cables joined together and protected from water by plastic bags !!!!!!!!!!! and bits of scrap wood.
SEP invested in our technology all electronic security is GSM wireless signaling and battery operated ‘3 years battery life’. Trust in the professionals.