Installing your Hardwired Transformer Kit

This article will help you solve power problems by replacing the hardwired transformer currently connected to your Ring Doorbell Pro with a new unit. 

Important - Read this before installing transformer!

  • There is a risk of electrical shock: Working with electricity can be hazardous unless proper safety precautions are taken. If you are uncomfortable with the processes and tools described in this article, please consult a qualified electrician.
  • Be sure you have a proper replacement transformer: We recommend a transformer unit with at least 16 volts AC and at least 30 volt-amps.
  • Be careful of damaging walls: Removing and installing your transformer may involve removing your old doorbell mechanism or pulling the transformer from inside a crawl space. Lack of care may cause damage to walls or other structural portions of the house. 
  • Be careful of damaging other electrical components: It's possible that your original transformer may be mounted in a basement, attic, or crawl space with other electrical components. Be careful when removing the transformer that you do not pull or otherwise damage these other components. 

Installing your Transformer

  • Shut off your power at the breaker.
    • You'll be working with electrical wires, so before you begin, turn off the circuit breaker that supplies power to your doorbell transformer.

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  • Locate your existing doorbell transformer.
    • In many houses, the doorbell transformer is installed in a junction box behind the internal doorbell chime or mounted near other electrical components in a basement or crawlspace.

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  • Remove your existing doorbell transformer.
    • First, disconnect the three wires that connect the transformer to household power.
    • Next, disconnect the two wires that are screwed into the terminals.
      • Note the position of each wire as you detach it. You may find it helpful to take a picture of the current install for later reference.
    • Once all of the wires are detached, remove the transformer.
  • Mount the new doorbell transformer in place of the old one. 
  • Connect the wires.
    • Once the new transformer is mounted, attach your household power wires to the matching wires on the new transformer using wire nuts.
    • Then connect your existing doorbell wires to the two screw terminals. It doesn't matter which wire goes to which terminal. 
  • Restore power to the breaker. 
    • Now that the new transformer is mounted and wired, it's time to turn the power back on

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  • Check the voltage
    • In the Ring app, tap your Ring Video Doorbell Pro, then tap Device Health. 
    • Check the voltage reading. If it shows "Good: or "Very Good," you're ready to go!

Click here to download the transformer installation manual. 

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