ZKTeco Time Attendance Terminal K20
K20 fingerprint attendance terminal with TCP/IP and USB host. Regional capacities and enabled SSR/card configuration must be matched to the supplied revision.
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Overview
The ZKTeco K20 is a fingerprint time-attendance terminal for collecting employee clocking records. A 2.8-inch TFT screen provides the local interface, and TCP/IP networking plus USB host connectivity are documented for transferring data. It suits a project that needs a dedicated clocking point rather than a facial-recognition camera or a general-purpose computer. The required authentication and reporting configuration should be identified before comparing it with another K-series model.
The January 2021 manufacturer datasheet lists 3,000 fingerprints and 100,000 transactions. It also documents a backup battery and simple door-control connections for an electric lock and exit button. Battery operation can maintain the clocking point during a power interruption, but the document does not establish a guaranteed runtime for an aged or differently supplied battery. Door hardware and its power arrangement remain separate installation requirements.
ZKTeco’s Argentina page describes network administration, manual USB transfer and attendance export in Excel format. These provide alternative ways to collect records, with the enabled reporting arrangement determining the actual workflow. Earlier regional K20 publications and the supplier record have different card and capacity figures, so the supplied revision remains to be established. Keep the software arrangement, credential option and installation components explicit when requesting a quotation.
Applications & Use Cases
- Local attendance review: The documented query function lets users or administrators inspect available clocking information at the K20. This is useful for checking an attendance event at the collection point before using the chosen USB or network reporting workflow.
Product FAQs
Why might the terminal have no SSR Report menu?
SSR is an optional configuration in the manufacturer documentation. The 2021 K20 leaflet describes SSR in its introduction but lists it as optional in the functions table; that option needs to be identified on the supplied unit. A missing menu should not be treated as proof that every unit can gain the feature through an ordinary setting change.
Can an existing nine-digit employee database be moved without checking the identifier format?
The 2021 K20 datasheet lists a nine-digit user ID. Check longer employee identifiers and the receiving attendance software’s mapping before migration, so distinct staff records are not shortened into the same identifier.
Can it share the 12V supply used by some other attendance terminals?
Do not select a supply from another model’s attendance function. The January 2021 K20 datasheet specifies 5V DC, 800mA. Match the actual unit label and applicable revision before connecting power; that dated specification does not establish the adapter included in this supplier package.
Are ID-card and IC-card versions interchangeable when reusing staff cards?
The 2021 K20 table lists ID cards among standard functions and IC cards as optional; the supplier record describes optional card configurations. Identify the fitted card technology and the existing credential format. A card slot or RFID description does not prove support for every credential type.
Can a clocking record include an activity or job code?
The documented K20 functions include Work Code. Where the device and attendance workflow are configured to use it, that code can distinguish the activity associated with a clocking. Define how the receiving reports interpret those codes; the feature does not establish automatic job costing or payroll integration.
Specifications
| Manufacturer | ZKTeco |
|---|---|
| Model | K20 |
| Fingerprint Capacity | 3,000 in manufacturer datasheet V2.0 dated 2021-01-16; supplied revision requires confirmation |
| ID Card Capacity | Supplier lists 500 optional; 2021 Colombia table lists 3,000 cards, 1,000 with optional SSR. Exact supplied revision unresolved. |
| Record Capacity | 100, 000 |
| Communication | TCP/IP, USB Host |
| Standard Functions | Work Code, short message, DST, self-service query, T9 input, automatic status switch, 9-digit user ID, backup battery, simple access control (2021 manufacturer leaflet). SSR optional; supplied revision unresolved. |
| Optional | IC card, SSR and external bell in 2021 manufacturer leaflet; fitted options require confirmation |
Downloads
Manufacturer documents and Royal Link product sheets. Check the publisher and configuration notes for each file. PDFs open in a new tab.
| Document | Type | Size | Updated / version | Action |
|---|---|---|---|---|
| PDFK20 — earlier supplier sheet; regional specifications require reviewRoyal Link Technologies LtdSupplier catalogue specifications | Product sheet | 204 KB | 2026-10-30 | Download |
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