Hi!
Here you are with a nice and very useful indicator that will tell you what we can expect when we have a signal according to the pair's daily range you are trading and to your r/r ratio.
It can avoid false signals like today on cable, for instance.
A pair can break its daily range; of course it can and it does sometimes. But you need to be very confident if you want to sell a pair when it is at its daily lows. It is much better to wait for a retrace if it is the case.
You can find how the indicator works here:
http://www.forex-tsd.com/50960-post65.html
Nina