02-07-2016, 07:34 PM
the one I use emits a 1kHz tone, interrupted or continuous. used for tracing pnone ccts in multicore cables.
https://www.google.co.uk/search?q=bt+osc...oQ_AUIBygC
https://www.google.co.uk/search?q=bt+osc...oQ_AUIBygC
It goes, it stops (as reqd). 
Hate Housework!

Hate Housework!