Simply put, a Terp Timer works by using a laser-guided temperature reader to make sure that your dab nail is at the perfect temperature for the concentrates you're dabbing, the rig you're using, and a myriad other factors that play into making for the perfect dab! You just set a temperature you want your nail to hit, use the torch to heat the nail like always, and wait for the signature beep of the Terp Timer to let you know when things have been heated up the way they should.