Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buying another replacement (again)

Here I go buying my 6th replacement part for my X10 system in 4 years. I use this stuff maybe a dozen times a year to power various pool accessories, ie. my pool waterfall pump and my spa light. My pool installers didn't include hand switches for these items, only the X10 setup, hence the continual part replacements. Next time one of these fails I will rip it all out and just install hand switches. Overall, these are good when they work, but they burn out regularly and are expensive to replace.