It moves on its own.
A motor sits in the head rail and drives the blind up and down. You set a position from your phone, your voice, a wall switch or a schedule. No chain, no cord, nothing hanging down the side of the window.
Li-ion battery or 240V hard-wired
It runs to a schedule.
Down at sunset, up at seven, halfway when the afternoon sun hits the back of the house. We set the first schedules on the day we fit and write them down for you. You change them whenever you like.
Time, sunrise/sunset, or a sun sensor
Then you forget about it.
Around 35 dB at one metre — you hear it in an empty room and nowhere else. A battery motor gets charged about twice a year. A hard-wired one gets nothing.
≈35 dB at 1m · charge 2× a year