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1. All of them seem to be missing threads. If it is a new house, a one-year warranty, find a maintenance staff left by the developer.
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...In this is the nonsense ... It is recommended to find a professional to help you take a look. 、 You can also try it if you have a picture、。。
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This wire was left by the developer, and it should be a fake smoke detector wiring left by the developer.
If there is no electrical appliance plugged into the socket in the bathroom, it may be an electrical failure. >>>More
Adding a waterproof dropper box can only be waterproof drops. >>>More
It can be used, but the installation location should be as far away as possible from faucets, showers, wash basins and other multi-water devices to avoid electricity leakage. If you really can't avoid it, choose a Type 86 switch, socket, and install a splash box.
It's better to put them all on.
In particular, it is best to install the switch of the water heater. In addition, the socket closer to the sink must be installed. >>>More
Because there are frequent baths and laundry in the bathroom, so the water vapor in the bathroom is relatively large, so it is necessary to use a waterproof socket with a cover.