Why this mini-kit don’t have one on/off switch ???
I mesure 12mA current from 9V battery, this reduce lifetime.
Or is my kit that have some problem ? (It works great at 1320 Hz freq)
Remove the battery when the kit is not in use…
Why this mini-kit don’t have one on/off switch ???
I mesure 12mA current from 9V battery, this reduce lifetime.
Or is my kit that have some problem ? (It works great at 1320 Hz freq)
Remove the battery when the kit is not in use…