Installation is very easy and facilitated by a manual in French (it is rare!). Just put them in their place batteries and plug the receiver into an outlet. Pressing the transmitter and it sounds. The two receivers operate independently. You can either use only the mains, or use only the battery or 2 at a time (eg one can place one in a garage or outbuilding or even a move in the garden if you want be sure not to miss a visit). Another plus: the two are set independently both in terms of the volume of the melody. The volume includes 4 levels and you press a single button to choose the desired position. As for the melodies, we must remain 5 seconds press the dedicated button and then scroll one by one until you find one you like. Then pressing the transmitter that will keep in memory the last played music. This setting is quite tedious because first it is necessary to listen to the 52 songs then iron them one by one until you find the one chosen. And if you miss it, we go again! And bis repetita for the second transmitter. At least there is a choice between fairly short music or shorter or longer with classic tones, classical music tunes, a few animal noises or other trend games. This is effective even if it goes a little too in the treble.
Without precisely measure the distance in my farthest tests, I doubt that the 300 meters are kept. In contrast, the 130 meters are what is already considerable for this type of device. Aesthetically, it's quite well with black gear that light up in blue running either the transmitter or receiver. This gives a nice effect. However, the issuer has no seal and so avoid putting it in an exposed location. Moreover, it is cheap plastic. We must therefore see the test of time.
In conclusion, this kit is rather satisfactory. It offers long distance transmission (largely sufficient for most houses) and especially 2 chimes offer 2 options (heads or connected continuously) what is the big plus. We regret the absence of the batteries for the second chime and especially the non sealing of the issuer.