How to turn on/off the automatic flushing function when leaving the seat?

The automatic flushing function is turned on by default. If you need to adjust the settings in special circumstances, please contact customer service

How to flush during a power outage?

Products with hidden wall-mounted water tanks can flush manually by pressing the manual flush panel

Does it have auto open/close lid function? How to turn on/off the automatic cover flip feature?

Yes it dose. It comes with a radar sensor, and the toilet lid will automatically open when the user approaches the radar detection area. Please refer to the Advanced Function from the Installation Guide link under Specification to know more about the feature setting.

Is the sensing distance of the radar adjustable?

Please refer to the Advanced Function from the Installation Guide link under Specification to know more about the feature setting.

I see in the writeup it will hold a 400 kg. person. Above here, it says 100 KG\\kg. 100 kg isn't enough .

The toilet can hold 264.555 pound.

At what height can the toilet be adjusted? will it go to 19 inches?

Yes, you can adjust the suspension height to the height you need.

Is the seat replaceable?

Yes, it can be replaced if it is under warranty.

I need to order the in-wall tank, as it didn't come with the order. What is the part number and maker?

I need to order the in-wall tank, as it didn't come with the order. What is the part number and maker?---It comes with wall tank. If you didn't receive it, pls contact us with pics, we will check for you.