Cylinders
Thumbturn or key on the inside?
Same size, same job, one difference that matters more than any specification in this hub: whether the door can be opened from inside without finding a key. That is a safety decision, not a security one.
| Compared on | TEC440 30/30K | D6XNP 30/30 |
|---|---|---|
| Size | 30/30 mm (1.18/1.18 in) | 30/30 mm (1.18/1.18 in) |
| Inside | Thumbturn | Keyway |
| Maker | ABUS, for ToniTec | ABUS |
| Keys supplied | 6 reversible | 5 reversible |
| Body | Titalium, anodized | Not stated |
| Anti-pick pins | Not stated | Stated |
| Code card | Supplied | Supplied |
| Emergency function | Yes, stated by ToniTec | Yes |
| EN 1303 grade | Not published | Not published |
| Listed on amazon.com | Yes | Yes |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
Buy the thumbturn version for a front door on an escape route, and for a door that may later take a smart lock fitted over a thumbturn, such as the Aqara U200 or the SwitchBot Lock Ultra.
Buy the keyed version where glazing or a mailbox puts the inside of the door within reach from outside, and accept that a key must then live somewhere everybody knows.
The thumbturn. A door that needs a key from the inside is a door for which a key has to be found while a house fills with smoke. The ABUS emergency function lets a key stay in the inside, but it only helps if the key really is left there; the thumbturn does not depend on that habit.
When somebody can reach it. Glass panels beside or in the door, a mailbox close to the lock, or a cat flap at the wrong height all turn a thumbturn into a handle. In those cases the keyed cylinder is correct, and the key discipline is the price.
30/30 with inside thumbturn · Titalium · 6 keys · for doors opened without a key inside
The thumbturn version of the TEC440: a knob on the inside instead of a keyway, so the door opens from within without a key. Same Titalium body and six reversible keys.
Best for: A front door that should always open from inside without hunting for a key — which is most front doors.
30/30 mm (1.18 in) · anti-pick pins · emergency function · 5 reversible keys · code card
ABUS's everyday euro cylinder: special pins for pick and manipulation resistance, an emergency function that works with a key in the other side, and five reversible keys with a code card for reordering.
Best for: Replacing a builder's cylinder on a front door, at the smallest sensible price.
≈ $54
