const char* PREF_NAMESPACE    =  "rXsch";
const char* RELAY_1_SCHEDULE  =  "r1sch";
const char* RELAY_2_SCHEDULE  =  "r2sch";
const char* RELAY_3_SCHEDULE  =  "r3sch";
const char* RELAY_4_SCHEDULE  =  "r4sch";
const char* RELAY_5_SCHEDULE  =  "r5sch";
const char* RELAY_6_SCHEDULE  =  "r6sch";
const char* RELAY_7_SCHEDULE  =  "r7sch";
const char* RELAY_8_SCHEDULE  =  "r8sch";