Why don’t Pokit Meter or Pokit Pro have an on/off switch?

When we were developing Pokit Meter, we did not have enough room to integrate a switch into the design. Also, with Pokit Meter all of the electronics spin to accommodate the retractable leads which also makes integrating a button quite difficult. With Pokit Pro, the device goes to sleep after a couple of days and uses very little power while asleep. Pressing the button wakes it back up, and it is also rechargeable.