Bought the WS-1510ELPM . I love this thing . Always had good luck with my MES 30 , but what a difference this makes .
I'm finding shorter cook times so far . Guessing because no more falling temps .
Used it the other day to smoke a ham I cured . Temps in the 20's . Smoker set to 200 worked great .
Next day did a pork loin . Cold and windy again . Smoker set to 260 . Struggled to reach cook temp .
So running in PID mode , I set P=1 , I=0 , D=100 . No more struggle . Ran up to temp , with a faster recovery response .
Part of what you pay for with this model is the tuning / programming .
Skip the flow charts , Understand what each letter does and the number assigned to it , greater or lesser will increase or decrease the operation .
Also , may or may not know the the ambient reading on the sensor can be calibrated . Access code is 155 . Entered value is + / - whatever offset you need .
Starts at page 11 section 5.2 in the directions I have if you're interested .