I bought a pair of these probes, one for the pool and another for the spa. They transmitted well before leaking water and shorting out within 24 hours of operation. Took them out of the pool and let them dry out and they seem OK. I contacted the seller and they suggested using a sealer on all the seams and joints of the float. After doing so one of them lasted about 48 hours before failing (once again, when dried out it came back to life). I have written the manufacturer and they have not responded to me as of yet. I could not recommend these items to anyone.