Perfect: lacks some visibility

Struggled a bit to settle 3 probes (channel change because of waves other surrounding devices).
Once Spent channel 3 on all probes and the central, "reset" the central one by one and then "reset" of the 3 probes, everything is perfect.
One out, one in each bedroom upstairs (and + concrete slab) and the center in the living room, everything works perfectly.
A slightly forced display have been better or more white or LED background.
Otherwise very pleased to benefit from four temperature readings for a price quite reasonable.
Efficiency flawless wireless sensors.