Light meaning and fix
Alarm.com ADC-VDB780B Blinking Blue Button Light
On the Alarm.com ADC-VDB780B, a blinking blue button LED means the doorbell is in WPS pairing mode.
On the Alarm.com ADC-VDB780B, a blinking blue button LED means the doorbell is in WPS pairing mode.
What it means
The doorbell is waiting to pair through WPS. Alarm.com identifies blinking blue as WPS mode for this model.
Device details
| Device type | Wireless video doorbell |
|---|---|
| Brand | Alarm.com |
| Model | ADC-VDB780B |
| Light name | Button LED |
| Light location | Front doorbell button |
| Color | Blue |
| Pattern | Blinking |
| Severity | info |
| Last verified | 2026-05-02 |
What to do first
Complete WPS pairing or exit setup and use another pairing method if needed.
- Keep the doorbell powered.
- Make sure the router or chime is ready for WPS pairing.
- Complete the WPS setup within the allowed pairing window.
- If pairing fails, restart the setup flow.
- Use AP mode or app-based setup if WPS does not work with your network.
When this can be normal
This is normal when the doorbell is intentionally placed into WPS mode.
When to stop troubleshooting
Stop and use app-based setup if the doorbell repeatedly fails WPS pairing.
Parts or products that may help
Only replace parts when the light pattern and official guidance support it. Some lights indicate setup or software states, not broken hardware.
- No replacement part is recommended from this light pattern alone. Troubleshoot the device state first.
FAQ
Is blinking blue on the ADC-VDB780B bad?
No. Alarm.com lists blinking blue as WPS mode, which is a setup or pairing state.
What if WPS pairing fails?
Restart setup and try again, or use AP mode or the setup method recommended by your Alarm.com service provider.
Does blinking blue mean the battery is low?
No. For this model, blinking blue is listed as WPS mode.
This guide is based on: Alarm.com ADC-VDB780B LED Meaning Guide.
Source type: official_support_page. Confidence: verified. Last verified: 2026-05-02.
Alarm.com service provider setup flows can vary.