I chose this product because I did not have normal / fade ringtones. The product is simple, quick to put into operation and otherwise well. Only that the receiver, the bell itself takes too much power. I have to replace the latest every 2 months the three AA batteries completely, because they are empty. I have already contacted the seller by e-mail, unfortunately, no answer ... Therefore, I can not recommend, since this issue perhaps is all ringing the bell.