Bought to fit a drain pump so we can be warned before we go down to the basement and find it wet. The instructions seemed a bit disorganized but easy to understand. WiFi works well. We have a two story house and the router is on the second floor. There are no problems connecting to WiFi, even in the corner of the basement. I tested it before installing it and immediately got an alert on my phone when the sensor got into the water in the sump pump hole. The instructions say it doesn't work when plugged in, so that's a little disappointing. I'd rather just plug it in and leave it instead of having to remember to charge it regularly. The built-in alarm clock is not very loud. If you plan on installing it in your basement, you probably won't hear it unless your house is otherwise running and kids are running around. The sound of the alarm clock is an overture to William Tell and not your usual wake-up call, which is good but unexpected. I don't think I bought it for the volume of the alarm but for the phone alarm feature which seems to work well. Overall, I'm happy with the product and would recommend it for the price.
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