There are no batteries or batteries to put in the parent unit or the baby unit: the two plug only on the current.
The parent unit is conventional and well studied. With a beautiful color screen of 1.8 "or 4.5 cm in metric units, 8 function keys and 4 LEDs, the grip is no problem.
This screen offers great exposure and colors are pleasant. It is easy to throw a baby on look without going to disturb him in his room. The unit also allows you to zoom and move the screen. The camera also has sensors which automatically switch to night vision when the brightness down.
If he needs to be reassured or on hold, an oral exchange is possible thanks to the presence of a microphone. The sound made is good enough without sizzle.
Side music, this monitor offers 5 very soft melodies for baby to sleep. Like other such devices.
It is also possible to monitor the temperature of the room that is displayed on the screen ..
A rotating clip on the back allows to place part way on furniture or to hang on a belt.
For many families, it can add up to 4 baby units to be used in single mode (see the screens one after another whose number is displayed) or scan mode or image of each camera s' displayed successively.
The pairing between the monitor and the camera is as I said snapshot. Although my apartment only has concrete walls, the WiFi transmission through virtually all obstacles (I might advance me a little because I have not tested to 300 meters apart, but for an apartment or a house midsize no connection problem. I sincerely think)
Now the least. It's that I have tested a Topcom KS-4246. It has almost the same features, except that the screen measures 3.5 "(twice) and this provides a greater visual comfort to see the functions displayed as temperature.
However it costs more than the 50 Beurer BY77
If you have the means to go Topcom (which increasingly requires batteries that guarantee against blackouts). For a few months of use, the Beurer its price and given its quality will prove sufficient for a majority of users.
