Children love experimenting with electrical components and the use of buzzers or lights in a simple alarm circuit. This will enhance their understanding of different switches and how they work.
60 AA batteries, 30 AA battery holders, TTS switch pack, 50 3.5v bulbs, Roll of masking tape, 15 panel buzzers, 72 clothes pegs, 50 battery snaps, 30 bulb holders, DATA Helpsheet notes.
Alarms - Unit 4D Product Notes
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