TEST KIT W11224254

Hello Randy, thank you for your question. There are no electronic testers or hoses. This kit includes two tests depending on the location of your dryer's lint screen: One for the lint screen in the top of your dryer, and one for the lint screen in the front of your dryer. Test kit mounts inside the dryer. Dryer vent testing kit is for 29" dryers with a top mounted lint screen. Use the plastic card to hang inside your dryer drum, then run the unit three times empty. If the card stays in place, the venting and dryer need to be cleaned out. Complete instructions are included. Good Luck and have a great day.