How do I find my doorbell system voltage?

Locating your doorbell system's voltage

This article describes how to find the voltage for your existing doorbell system. The Blink Video Doorbell requires 16 - 24 volts AC at 50 - 60Hz, and 40VA maximum from mechanical or digital chime systems. 

Locating your doorbell's system voltage

Risk of electrical shock. Always use caution when handling electrical wiring.

Your chime system housing can have electrical information in the following places:

  • On a label or sticker located on the outside of the system housing. 
  • Imprinted on the plastic mold of the system housing (may be difficult to locate).
  • On a label or sticker located inside the housing system.

Wired power not supported alert

What does "Wired power not supported" mean?

If the power level for your existing chime system is not compatible, your doorbell will default to Event Response mode and the "Wired power not supported" alert displays during setup.

This means your doorbell is functioning in Event Response mode and is not connected to your existing chime wiring and your in-home chime will not sound when the doorbell button is pressed. Additional features such as on-demand Live View and manually updating thumbnail images are not available when the doorbell is in Event Response. 

If your existing chime system is not compatible, you can add the Video Doorbell to a Sync Module system to enjoy features such as on-demand Live View, manual thumbnail images, and more.


Note: Even when wired, the doorbell is always powered by size AA, 1.5-volt, lithium non-rechargeable batteries.

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