ORIGINAL: Pete S-RCU

I'm looking for a real time airspeed indicator that could be used to keep a jet just above stall speed on landing.
It should have a sound indicator that warns as stall speed is approached.
A beep that increases in frequency as you approach a stall?
Does anyone make one that could be used for this?
I've looked at a few, but would like to know if anyone has had first hand experience with one.