STEP 1. Make sure the Base Station is flashing GREEN before double shaking the Baby Device to pair. If not, add the Baby Device again from the Sense-U App->Manage Devices->Add Device.
STEP 2. If the Baby Device does not flash when double shaking it, remove the battery and plug in again. If still no light turns on, replace with a new battery until it flashes GREEN once to restart.
STEP 3. If the Baby Device only flashes GREEN when double shaking it, it means it is already connected to the Base Station or another smart device. Delete the Base Station or log out that smart device first before pairing again.
STEP 4. If the Baby Device flashes BLUE but is still unable to pair, move the Baby Device closer to the Base Station, and move other Sense-U devices or Bluetooth devices away, then try again.