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Digital Programmable Bell Timer
Specifications
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Display Type: Digital LCD
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Programming Mode: Daily / Weekly
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Time Accuracy: ±1 second
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Power Supply: AC 220–240V, 50Hz
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Backup: Built-in battery backup
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Output: Relay output for electric bells / sirens
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Mounting: Wall mount
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Body Material: ABS Plastic
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Color: White / Grey
📌 Ideal For
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Schools & Colleges
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Offices & Corporate Buildings
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Factories & Workshops
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Training Institutes
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Mosques & Temples
The Digital Programmable Bell Timer is an advanced automatic bell control system designed for schools, colleges, offices, factories, and institutions. It allows users to pre-set multiple bell timings with precise accuracy, eliminating the need for manual operation.
With a digital LCD display, real-time clock, and power backup, this bell timer ensures uninterrupted and reliable operation. Its flexible scheduling makes it ideal for managing class periods, shift timings, breaks, and alerts.
Key Features
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Fully Automatic Bell Ringing – Program multiple ON/OFF bell timings effortlessly
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Daily & Weekly Scheduling – Set different schedules for weekdays, weekends, or special days
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Digital LCD Display – Clear time, program status, and mode visibility
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High Accuracy Clock – Built-in real-time clock with power backup
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Manual Override Mode – Ring bell manually when required
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Supports Multiple Bells – Suitable for schools, colleges, offices, factories, and mosques
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Power Failure Memory Backup – Settings retained even during power cuts
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Easy Wall Mount Installation – Compact and user-friendly design

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Text to Speech TTL Module (Serial to Speech)
-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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