Check the listing for details. Balboa spa pack sensor for ALL M7 system PN 53605 ¼"diameter. Fits all M7 system. Condition: Neuf. Listed at 37.97 USD. MONTRÉAL SPA DEPOTWelcomes you !Please visit my boutique for all Gecko Electronics, Balboa WG®, Waterway & Aqua-Flo pumps original OEM warranty products needs for your spa, hot tub or bath tube http://stores.cafr.ebay.ca/montrealspadepot Balboa water group®, KIT SENSOR ASSY 12" (1/4"diam) M7 (1 sensor) Product number: PN 53605 There are 2 sensors on the Balboa M7 Heater, one at each end of the tube Both control spa water temperature, High-Limit protection and detects extreme temperature in heater This is for 1 sensor kit assembly. registered trademark of Balboa Water Group® For ALL Balboa M7 technology spa packs COMPLETE (OEM) PRODUCT FROM BALBOA WATER GROUP®Brand new objects. Factory seal.1 year warranty coverage. Minimum selling retail price: 99.99$ + tx This is for 1 sensorReal cost shipping rates (insured 100%) with shipping calculator 9" x 7" x 1" inches. Weight: 0.5 lbs CANADA: by CanadaPostExpedited 1-7days Standard 3-9daysXpresspost 1-3 days, all trackablesUSA: CanadaPost&USPS Airmail small packet USA 6-12days no tracking#Expedited parcel USA 4-8 days, with tracking#Xpresspost USA 2-4days with tracking#INTERNATIONAL: CanadaPost + your local Postal services International Airmail small packet 6-15 days, no tracking#XpressPost International - EMS - 4-10 days, with tracking# registered trademark of Balboa Water Group®