For a electrical & lighting listing this is the one we would keep; the detectors & alarms combo detector just works. At a glance Type: Combo Detector Power: Mains Sensor: Photoelectric Compliance: BS 50291 Price: à§³33.72 (offer à§³28.55) What actually matters Set up as a combo detector-class unit, it does the job without asking you to improvise. In practice Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. Storage: stows neatly, taking no more room than a loaf tin when out of service. First use: no break-in ritual required beyond a quick wipe and a glance at the label. A solid, predictable choice for anyone who would rather not think about the item again.