MME Metal Automatic School Timer Gong Bell | Heavy-Duty Automatic School Timer Gong Bell - Loud Sound, Compact Design, Perfect for Schools, Colleges, Factories, and Warehouses (15 Inch)

MME Metal Automatic School Timer Gong Bell | Heavy-Duty Automatic School Timer Gong Bell - Loud Sound, Compact Design, Perfect for Schools, Colleges, Factories, and Warehouses (15 Inch)

Automatic School Bell Management System - Especially Designed for Schools (25 Sessions/Day)