During the final stage of constructing the hand triggers/buzzers, some assemblers have found that the twisting action of inserting the bottom 3d printed plug in for gluing can cause the bent-apart RJ11 contacts to be twisted together. This shorts out the linear switch -- making the buzzer effectively "always on". This can be mitigated by wrapping the exposed metal of the contact/solder/wire with electrical tape or heat shrink tubing.
During the final stage of constructing the hand triggers/buzzers, some assemblers have found that the twisting action of inserting the bottom 3d printed plug in for gluing can cause the bent-apart RJ11 contacts to be twisted together. This shorts out the linear switch -- making the buzzer effectively "always on". This can be mitigated by wrapping the exposed metal of the contact/solder/wire with electrical tape or heat shrink tubing.