*PLUMBERSSTOCK EXPERT* responded:
Hi, there! We're sorry, but we currently don't have the water-sensing cable extension that you are looking for. The suggestion from Anonymous above might work. You can go get a simple Cat5 cable and use it for an extension, then, connect it to your water sensing cable. Place a few drops of water on the sensing cable to see if it works. For more information, please contact us @ 435-868-4020 or E-mail us @ support.plumbersstock.com. Thank you and have a great day!