GAI-Tronics 297-103RT4 Retrofit S.M.A.R.T. Externally Powered Emergency Phones User Manual | Page 18 / 19 | Original mode | Also for: 297-103RT6 Retrofit S.M.A.R.T. Externally Powered Emergency Phones, 297-103CB6 Retrofit S.M.A.R.T. Externally Powered Emergency Phones, 298-103RT4 Retrofit S.M.A.R.T. Externally Powered Emergency Phones, 298-103RT6 Retrofit S.M.A.R.T. Externally Powered Emergency Phones, 298-103CB6 Retrofit S.M.A.R.T. Externally Powered Emergency Phones