i fitted a wireless alarm from B&Q 11 years ago i think it was badged response, it still works fine today apart from the batteries in the siren have died but who pays attention to alarm sirens anyway
the alarm phones me or another 2 designated numbers when it triggers which is better than relying on somebody reacting to the siren which almost never happens most people see alarm sirens as an annoyance rather than an alert somebody might be being burgled
if you are going to fit a wireless alarm the only bit of advice a can give you through experience of a wireless alarms is fit a wired bell box / siren
if you fit a battery operated wireless siren sooner or later the batteries will give up the ghost the solar panel on the siren box isn't really up to the job especially in winter and you will need to replace them which is easier said than done when the box is 15 feet up the wall and ladders are not your thing ( as in my case )
B&Q replaced their stock of response alarms with yale some years ago, looking at them they look pretty similar to the response alarm kits they sold previously
what can happen with the wireless alarm i bought is when the batteries in the sensors or the siren for that matter ( hence putting a wired siren in place ) run low it can randomly set the alarm off via the tamper function which can be a pain if it is the wireless siren, the sensors are easy enough just replace the battery but the siren can be a bit of a pain considering it's 15 foot up the wall and uses a pair of small 6 volt sealed lead acid batteries which don't tend to be found on the shelves of your local super market if you get what i mean by that
apart from that mines 11 years old and still going strong so no complaints from me
another thing is to buy a couple of spare remote fobs and maybe a spare or 2 PIR sensors
alarms tend to be a long term thing the chances are the model you buy today will not exist when it comes time to replace bits that might go faulty
you could always replace the lot if bits give up the ghost but it seems wasteful for the sake of say a remote fob or a PIR sensor
saying that the only bit i have replaced is the wifes remote fob which started playing up but i did buy some spare bits just in case