I do not own this device for 15 days, but the first impression is excellent. Everything is very functional, the tightness of the pool sensor is well designed, the radio range is very good. I tested the range of 50 m with obstacles, everything works perfectly. (Sensor in the pool, receiver in the house). I regret that we can not set a high or low temperature alarm. This would be very useful in particular on the temperature of the pool water. Everything is aesthetic and works with very mundane sticks batteries. I still have to check the battery life on issuers, but I am confident.