hi John,
I bit the bullet about 2 years ago and brought the Autometer triple gauge's
they have since been brought out by Redark - but I think they dropped the triple's

THEY have warning light & bell when things get over the "pre-set" parameters...
on my Boost the alarm goes off at 10lb and the gauge turns red


as Cuppa said, group buys with well known items at a good price are a better idea