It is mainly for solving the problem of poor mobile communication of families. There are the problems of weak signal in the whole house or in parts of house, which will bring you in the trouble of mobile phone calls cut off, unstable communication. What’s more, due to the weak signal, the mobile phone will have bigger output power and increase the radiation, which are bad for human health. Sunrise MINI type of SR1 series signal helper are specialized in solving such problems for families, with beautiful and small housing, easy installation and the output power only 0.005 watts, much more less than the international standard about electromagnetic radiation. And the key is to ensure your mobile phone communication and can reduce the radiation when you use the mobile phone.