UNI-T UT139C - Where to Buy?

[nanofrog]

stop bitching, my first meter was an analog thing the size of a packet of smokes!  it looked a bit like this>>

 

Same for me. I don't recall the model number, but it came from Radio Shack.

[Cliff Matthews]

Guess I shouldn't complain, but I'd have been OK to pay another $2 for a rubber protective holster. I might open it up to install the missing side/rear membrane key for manual ranges. Anyone find out how to get the damn light to stay on longer?

[stj]

yes, edit the eeprom.

it's the same chip as the uni-t ut210e, so look in the thread about it.
here's the memory map btw.

if you set the light delay to 0 it stays on till you turn it off - manual control. 
you should also push the auto-power off back from the standard 15min's to maybe an hour.