Connect the Power Supply

A project log for Call Box

Pushing a button will sound a piercing alarm to alert a caregiver (in another room) that attention is required.

Mike RigsbyMike Rigsby 08/23/2016 at 23:540 Comments

After the alarm container has been printed, insert the wire from the 9 volt power supply through the hole in the container.

Now, solder the wires to the alarm module (where the battery was intended to connect). Be certain that polarity is correct.