Smart School Bell
Easy To Install & Use
Automated electronic school bell with battery operated function, it rings bell even
without power (ac supply) for 2 days full day / half day modes max 50 periods possible
per day exam modes 45mins, quarterly, half yearly, final exam modes plug and play
option bell type. Also can be definable long bell, short bell, medium bell or combination
of these three like long bell + short bell + short bell, long bell + medium bell,
medium bell + short bell.