All of our class change time clocks require a 24vdc supply. If the time clock is signalling to a fire alarm system then this 24v supply can often be fed from the fire panel itself. If not, a separate 24vdc power supply unit will be required to power the time clock.
If you are installing a dedicated class change system with electronic class change sounders or motorised bells, you will need to ensure the power supply has an output capacity greater than the power your class change system requires.
Each unit can house 2 backup batteries upto 9ah.
Please check our Class Change Circuit Design Tool to calculate the size of the PSU required.
Jump To: 2401SM-2 1 Amp PSU | 2402SM-2 2 Amp PSU | 2403SM-2 3 Amp PSU
