Bite indicator alarm

[TRUCKDRIVER]

I was wondering if anyone could help me with the parts that I need to make this thing and how to make it any help is greatly appreciated it would be a project just for the one time making for my self not to sell to anyonyone else here is a pic of one is has no patient it is homeade

[bcct]

cheap, cheerful, solid and robust the korum bite alarms come with a battery and a hard case for about 25quid. been using mine now for nearly 2 years i think and can't fault them. they'll take a bit of a soaking in the rain too which is worth considering seeing as we live in Ireland....