4 ms·Two wires, a button, a bell, and a battery pack.by anakaine 1mo agoTwo wires, a button, a bell, and a battery pack.perilunar 1mo agostring, hole, brass bell.whstl 1mo agoString breaks. Hole attracts insects. Bell is too quiet or too heavy. Now we're in "under-engineering" territory. Also not good.anakaine 1mo agoTest your string regularly and fill your hole. That should keep your bell ringing.