Extech Model 445715 Calibration Conversion Cap

This simple, fast-printing adapter converts the Extech RH350-CAL Humidity Calibration Kit so you can calibrate the Extech Big Digit Hygro-Thermometer with a remote probe, model 445715. I hope it helps the one other person in the world who may need it ;)This adapter may also work with the Extech RH300-CAL Calibration Kit. I don't own that calibration kit, so I can't check it. It might also work with some of Extech's other humidity meters. The calibration kit: https://www.amazon.com/dp