I always have the device connected to the mains, because in battery mode the illumination switches off after a short time. In power mode, the data is always readable. The power cable is included.

With full lighting, it is at most 0.5°C more for me

3 AAA batteries for the device and 2 AA for the outdoor sensor. I connect the device to power cable and don’t use any battery. The outdoor sensor with Alkaline battery usually works for about 6 months even at winter time.

Yes, the cable is included.

The screen only darkens. From dark grey to black, you can still see the shades.

No problem, you can also hang up the unit! It has three holes at the back of the housing.

Hello 'Rohrer Hans', Thank you for your interest in our products. The outdoor transmitter is included in the scope of delivery. The following are the dimensions: Base station: 210x26(60)x140 mm Transmitter: 40x21x130mm With kind regards Your TFA Support

The dimensions of the receiver are: 40 × 21 × 130 mm