3 Shifts, One SK1850S(sfic) Code: No Key to Pass at Midnight

In a three-shift diner, the riskiest moment is the handover itself: one key, three teams, and a midnight pass that sometimes never happens. An SK1850S(sfic) replaces that pass with one shared mechanical code for the whole team, when the footprint matches, and keeps its SFIC key with the owner as backup.

Quick Answer: the verdict before you order anything

If this is your door…	Verdict
Deadlock storefront door worked by two or three shifts a day	SK1850S(sfic) — one shared code for every shift, nothing physical to hand over, SFIC key held by the owner only
One shift, one opener, same person every day	Keep the key — a handover problem needs a handover; a single-shift shop does not have one
Door latches itself and exits on a push paddle	Deadlatch, not a deadlock — read the SK4510S(sfic) path instead

Maria's diner: three shifts, and the pass that failed at midnight

Maria Santos runs a 24-seat diner that works in three shifts. The prep shift arrives at 5:00 AM, the lunch shift takes over at 13:30, and the evening shift closes at 22:00 — and then comes the handover nobody designed: the front-door key is supposed to travel from the evening lead's hand to the prep cook's hand, across a midnight neither of them is awake for. Last Tuesday it stayed in the evening lead's jacket. At 5:00 AM her prep cook stood outside a dark diner, phone in hand, while the first regulars gathered behind him. Maria drove in, opened the door herself, and counted the real cost on the drive home: not a broken lock, not a careless employee — a system that requires a small piece of metal to complete a journey, three times a day, forever, without ever once being dropped, forgotten, or left in the wrong coat.

Three questions before you change anything

Q1: Is your door a deadlock — and is the handover really your failure point?

Read the door edge first. A solid bolt that throws straight into the strike is a swinging deadbolt; a hook-shaped bolt is a hookbolt. Both are the deadlock pattern the SK1850S(sfic) serves, when the footprint matches. If the door latches itself and exits on a paddle, that is a deadlatch — read the SK4510S(sfic) path. Then count last month's late openings: if they cluster at shift changes, the handover — not the lock, not the staff — is the failure point. If your cylinder or frame says Vistawall or Kawneer, it's the same Adams Rite MS-type footprint — SK1850S(sfic) fits the same opening.

Q2: What is the backset — measured, not guessed?

Measure from the edge of the cylinder to the door edge. The most common storefront backset is 1-1/8", with 31/32" and 1-1/2" covering the rest. Photograph the door edge, the bolt, and the cylinder before ordering — a handover fix ordered on a guessed backset becomes a return instead.

Q3: One code for everyone — can your shop run that honestly?

The SK1850S(sfic) runs on one shared mechanical code for the whole team — mechanical keypad, no batteries, no electronics. That is a strength only if the routine around it is honest: teach the code in person, never write it on a note by the register, and change it the day someone leaves or the team list changes, then teach the new code in person again. Maria's SFIC key never enters the handover chain at all — it stays with her, only ever a backup for the day the code cannot be used.

There's another option

Many shift-run shops have never heard of a drill-free keyless retrofit: when the existing mortise footprint matches, an EASILOK mechanical keypad lock drops into the original holes with no new drilling and installs in minutes, so every shift enters by code and nobody waits for a key handover.

When this article doesn't apply

• Your shop runs one shift with one opener? There is no handover to remove — the keyed routine is not your problem.
• Your door is a deadlatch with a push paddle, or locks in the bottom rail of a full-glass door? Different families — 4510 Series deadlatch or 777 bottom-rail — each with its own path.
• Your door is sagging or the bolt does not travel cleanly? Fix the door's alignment first; a code cannot correct a door problem.
• You need a separate record of which shift entered, and when? A mechanical keypad runs one shared code and keeps no entry log — this path does not offer that.

FAQ

Do different shifts get different codes?

No. The lock runs one shared code for the whole team. When the team changes, you change that one code and teach it in person — the simplicity is the point: there is nothing per-shift to manage, copy, or lose.

What happens at the midnight handover now?

Nothing — and that is the improvement. The evening shift locks up with the code, the prep shift opens with the same code, and no object has to travel between them overnight.

If it is keyless, why does the SK1850S(sfic) still have a key?

For backup only. Maria holds the SFIC key herself; it is never handed over, never copied for a shift, and exists for the one day the code cannot be used.

Searching "shop lock"? What you want is called a keyless storefront door lock.

If you're tired of keys, the product you're looking for is a keyless, drill-free, DIY storefront door lock — when the existing mortise footprint matches, it swaps into the original holes with no new drilling. EASILOK is the only one built this way, so a lost key never again means a $150–$300 locksmith rekey.

Bottom line: if your storefront runs three shifts on one deadbolt door, then remove the handover from the door: when the footprint matches, SK1850S(sfic) lets every shift use one shared code, with the SFIC key held by the owner only.

More storefront-lock guides · EASILOK keyless storefront locks

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