Fits over the existing euro cylinder so the door still opens with the original key. Code, app and optional fingerprint entry, installed in about 15 minutes.

Key specs • Fits: standard euro cylinder, adjustable length • Unlock: PIN code, fingerprint, app or original key • Install: about 15 minutes, no door modification • Battery: 4 x AA, roughly 8 months • Keeps: your existing key working from both sides

In the box Lock unit, cylinder, adapter plates, screws, batteries, 3 keys

UK notes This is the one that actually suits UK front doors: it works with the euro cylinder that most UPVC and composite doors already use. Measure your cylinder from the centre screw before ordering.