// register for a beacon region
CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:uuid identifier:@"TestBeacon"];
[[BCMBeaconManager defaultManager] registerRegion:region enter:^{...} exit:^{...}];

// listen for beacon when it becomes very close and repeat the event every 15 seconds
[[BCMBeaconManager defaultManager] notifyRegionImmediate:region
                                                  repeat:YES
                                                interval:15
                                              usingBlock:^(CLBeacon *beacon) {
                                                  ...
                                              }];