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Device Clock
Connecting
Device connection lost. Use Connect to retry.
AUTOMATIC SCHOOL BELL SYSTEM

Enter your device key to manage the bell.

Device overview

Everything set for the school day.

Next bell · today
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Waiting for controller timetable.

Active timetableLoading…

Controller’s active timetable

Device statusChecking

Waiting for live status.

Quick access

Saved schedules run on the controller while offline.

Bell timetable

Set times, choose days, then save your changes.

⋮ MORE
Loading alarms…
# ENABLE TIME BELLS RING (SEC) REPEAT TIMES GAP (SEC) DAYS

Switch timers

Second Output Switch Timer

10 programmable ON/OFF schedules

# ENABLE ON TIME OFF TIME DAYS

Bell outputs

TEST A BELL
Max 3 s

Rings while held, stops at the limit (1–10 s).

Bell AIdle
Bell BIdle

Wi-Fi connection

Connect to Wi-Fi

Select a nearby network or enter Wi-Fi details manually

Device Access Point

Local direct connection to bell controller

Default: 123. Master login remains available for recovery.

Changing AP name/password will disconnect this browser. Reconnect your phone/computer using the new credentials.

Clock & settings

Internet Time

Internet time reference; RTC correction requires confirmation

NTP Time Reference
Bell scheduler does not depend on internet.

Device Clock

Built-in real-time clock

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Uses the current date and time of this phone/computer to set the device clock.

Calendar

Plan timetable dates and school holidays.

Timetable Validity

Select date ranges for automatic timetable activation.

Auto Schedule ChangeWhen enabled, timetable changes by date range; dates outside all ranges fall back to REGULAR.
ONTIMETABLESTART DATEEND DATE

Device & settings

Connection, outputs and system controls.

Production Test & Service

DENONTEK factory-only lifecycle, test and inspection page.

FACTORY MODE
Model--
Serial Number--
Lifecycle--

Production Checklist

Automatic checks never overwrite the live timetable. Relay checks require workshop confirmation.

RTC Detect / Read / WriteReads the device clock and writes the same checked time back.
NOT TESTED
RTC Clock RunningConfirms RTC time advances after the automatic test.
NOT TESTED
Relay / Bell Output ARing briefly, verify the physical bell/output, then mark the result.
NOT TESTED
Relay / Bell Output BDEN-480: set Output B to Bell mode if required, test it, then mark the result.
NOT TESTED
Wi-Fi Access PointConfirms the controller AP is running with a valid AP IP.
NOT TESTED
Wi-Fi StationConnect the unit to workshop Wi-Fi before running this check.
NOT TESTED
WebSocketThe authenticated factory command itself proves the live WebSocket path.
NOT TESTED
Timetable Save / Read BackUses an isolated temporary timetable file; the live timetable is not replaced.
NOT TESTED
NTPRequires an active internet connection and a successful NTP reference.
NOT TESTED
SPIFFS Read / WriteWrites, verifies and removes an isolated production-test file.
NOT TESTED
Reboot PersistenceArms a marker, restarts the controller and verifies it on the next boot.
NOT TESTED

Complete all mandatory checks before finalizing.

SPIFFS Directory

Read-only production inspection. Protected license files remain hidden.

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