Check the listing for details. Monitor 422 K1 Heater heat thermistor detector sensor. Condition: Used. Listed at 29.75 USD. I disassembled a perfect good running Monitor heater. This is the heat sensor....good used part..... I have several to sell so picture is representative of what you will receive. If this does not fix your heater than this part was not your problem..... SEE ALL THE OTHER PARTS I HAVE LISTED TOO!!!....WE SHIP FAST!!! S/H is FREE in USA......e-mail otherwise for a quote BEFORE you bid. I accept PAYPAL, and other possible types of legal payments that eBay allows..... International Buyers Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior.