SB-204

Automatic School Bell SB204

The SB204 Automatic School Bell is a robust, easy-to-use solution designed to automate bell ringing in schools, colleges, and institutions. It ensures timely, accurate, and consistent bell operations throughout the academic day without any manual intervention. Built for reliability, this unit helps maintain discipline and structure, while reducing human errors and dependency.

The SB204 model is a microcontroller-based digital bell system that allows institutions to program bell schedules for the entire week. It features a user-friendly interface with an LCD screen and keypad, making it easy for staff to set or update time slots. The system supports different bell patterns (short, long, emergency) and holiday scheduling. Once programmed, the system autonomously rings the bell at the scheduled times, ensuring smooth daily operations.

* Price excludes taxes, shipping, installation, setup, service fees, and additional charges. Contact sales for a customized quote based on your institution's requirements.

Product Features

A digital, programmable school bell system with LCD display, weekly scheduling, and multiple bell types for reliable, automated operation.

Digital Timer & LCD

Real-time clock and scheduling with LCD display

Weekly Program

Up to 50 bells per day, day-wise scheduling

Easy Programming

On-device keypad, no computer required

Memory Retention

Retains data during power failures

Bell Type Options

Short, long, and emergency rings

Manual Trigger

Manual bell button for emergencies or extra periods

Holiday Mode

Holiday and day-wise scheduling

External Bell Support

Supports external electric bell/siren (AC 220V)

Durable Enclosure

Compact, powder-coated metal, wall-mountable

Battery Backup

Optional battery backup for clock and memory

Model	SB-204
Power Supply	230V AC ±10%, 50Hz
Output Load Capacity	Up to 5 Amps (can control heavy-duty bell/siren)
Display Type	16x2 LCD Display
Bell Output	Dry contact relay output
Memory Retention	Non-volatile EEPROM / Battery RTC
Number of Events/Day	Up to 50
Programming	On-device keypad (no PC required)
Mounting Type	Wall Mount
Enclosure	Metal powder-coated body
Dimensions	Approx. 220mm x 150mm x 80mm
Weight	Approx. 1.2 kg
Battery Backup (RTC)	Optional (typically 3V Coin Cell)
Operating Temperature	0°C to 50°C
Warranty	1 Year Manufacturer Warranty