APPLICATIONS: Schools, Colleges, Education institutes, coaching institutes etc Use full: System fully relieves the person responsible to ring bell at accurate time. It is fully automatic. Special features: 1.Display: 32 Character digital display to show current date, time in firsmore...
Difference between model apnb & apb: model: apnb - this model rings bell in three types: (a) period bell : bell will ring once for period no.01, twice for period no.02 and so on. The stroke pattern will be 02 seconds on - 01 sec off. (b) singel shot long bell of 10 sec can be usemore...
To begin time keeping and initiate the bell mechanism using the Automatic School Bell circuit, the peon needs to momentarily press switch S1 to mark the beginning of first period. Thereafter, the bell sounds every 45 minutes to indicate the end of consecutive periods, except immemore...