For a electrical & lighting listing this is the one we would keep; the detectors & alarms siren just works. At a glance Type: Siren Power: Mains Sensor: Photoelectric Compliance: CE Price: à§³18.74 (offer à§³15.74) The part most missed Set up as a siren-class unit, it does the job without asking you to improvise. In practice First use: no break-in ritual required beyond a quick wipe and a glance at the label. Storage: stows neatly, taking no more room than a loaf tin when out of service. Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. Order it, use it for a week, and it becomes furniture rather than a purchase.