What is the accuracy rating of this utility gauge

Can I test the TP-50A with a multimeter

ensuring consistent control circuit performance

meaning the hub is sold separately

and UDBS product lines

Marley Engineered UHMT2 Stat Kit Els PW 29614 What is the accuracy ratingThe Marley Engineered UHMT2 Stat Kit is a field installed, two stage internal thermostat kit designed for high performance thermal management in industrial and commercial environments. Engineered as a direct 12 digit UPC 685360152424 replacement, the UHMT2 is identical to HUHAAMT2 and provides precise temperature regulation across a 40F to 80F range. This 2 pole control kit is specifically compatible with Marley's horizontal and downflow unit heaters,