• 1 blink  - LAN cable missing or bad; router needs reboot or port is bad
• 2 blinks - no internet protocol (IP) address from router
• 3 blinks - can't find server; reboot router or try power cycle
  
• 4 blinks - ready to register
• Both Blink - existing registration not deleted (see app menu)
• No Lights - check a/c power & outlet or factory reset
• Solid Red - registered (pre-requisite to sensor registration)

Users in gateway registration can try Quick Recovery