Very good material fully completing its function I use in an installation consisting of a base C590 and 6 handsets C59H. It allows me to serve the old part of the house with stone walls 75cm and separate the house garage. During a call you can pass the area covered by the base that covered by the base and by the repeater and that covered only by the repeater in perfect reception of continuity. For my installation I spent unsuccessfully for over an hour to want to declare the combined repeater according to the procedure specified in the instructions and which corresponds to other series as I was able to do it instantly for all handsets by enabling repeater system in the handset settings menu of the base. So that the transponder emits a maximun and stable signal ensuring the broadest coverage I installed in a location or C59H handset in conjunction with the base receives a signal from her 2 bars on the screen. The power of the signal transmitted by the repeater is a function of the signal strength received from the base. It should if possible test several locations repeater and base.