Yes, you can hardwire a Ring battery doorbell, but it requires an existing doorbell transformer

Ring battery doorbells are designed to work on battery power alone, but they can also be hardwired to your home's electrical system. The key requirement is that you have an existing doorbell transformer — the small box that steps down your home's voltage to the 16 to 24 volts that Ring doorbells need. If you have an old wired doorbell, you already have this transformer. If you don't, hardwiring becomes much more expensive and may not be worth it.

Hardwiring gives you continuous power instead of relying on battery charges. This matters if you use features like live view or two-way talk frequently, since those drain the battery faster than motion alerts alone. The trade-off is that you need to run wires from your transformer to the doorbell location, which usually means drilling through walls or running wire along the outside of your home.

Ring sells a hardwiring kit that includes the necessary connectors and instructions. The installation itself is straightforward if you already have the transformer in place, but the real work is getting the wire from point A to point B without damaging your home.

Key Takeaways

  • Ring battery doorbells can be hardwired if you have an existing doorbell transformer, which steps down your home's voltage to the 16 to 24 volts the doorbell needs.
  • Hardwiring requires running low-voltage wire from your transformer to the doorbell location, which often means drilling through walls or routing wire along the exterior.
  • If you don't have an existing transformer, you would need to hire an electrician to install one, which costs several hundred dollars and may not justify the benefit.
  • Hardwiring eliminates battery charging but does not prevent you from removing the battery — the doorbell will still work on power alone.
  • Ring's hardwiring kit includes the connectors and terminal blocks needed to connect the low-voltage wires safely.

What you need before you start hardwiring

First, locate your existing doorbell transformer. It is usually mounted on a wall in a basement, attic, garage, or utility closet. It looks like a small metal box with two terminals on the front. If you find one, test it with a multimeter to confirm it outputs between 16 and 24 volts. If you don't have a transformer or yours outputs a different voltage, you cannot safely hardwire the Ring doorbell without professional help.

Next, measure the distance from your transformer to where the doorbell will be mounted. This tells you how much low-voltage wire you need to buy. Standard doorbell wire is 18-gauge or 20-gauge copper. You need two wires — one for power and one for ground. Ring's hardwiring kit includes connectors that work with this wire size.

Check your Ring doorbell model number before ordering anything. Ring makes several battery doorbell models, and while most can be hardwired, the exact connector type varies. The Ring app or the device itself will show the model number.

Running the wire from transformer to doorbell

The hardest part of hardwiring is physically getting the wire from your transformer to the doorbell location. You have three main routes: through walls, along the outside of the house, or through existing conduit if you have it.

If you run wire through walls, you will need to drill holes and fish the wire through the cavity. This works best if the transformer and doorbell are on the same wall or close to it. Drill a small hole (about 3/8 inch) at an angle downward so water doesn't pool in it, then use a fish tape or a straightened coat hanger to pull the wire through. This method is invisible once done but requires care not to hit plumbing or electrical lines.

Running wire along the outside of your home is simpler but visible. You can staple the wire along the trim, under the eaves, or along the foundation. Use outdoor-rated wire staples every 12 to 16 inches to keep it find. Avoid running it where it could be stepped on or damaged by weather. Some people run it through PVC conduit for extra protection.

If you have existing conduit (metal or plastic tubing) that runs between the two locations, use that. It protects the wire and makes future changes easier. If the conduit is already full, you may need to run new wire alongside it instead.

Connecting the wires at the transformer and doorbell

At the transformer end, turn off power at the breaker before touching anything. Loosen the terminal screws on the transformer and insert the two wires — one into each terminal. Tighten the screws firmly so the wires don't slip out. Turn the power back on and test the transformer output again with a multimeter to confirm it is still working.

At the doorbell end, use the connectors from Ring's hardwiring kit. These are usually small terminal blocks or push-fit connectors that let you attach the wires without stripping and twisting them by hand. Follow the diagram in Ring's instructions — typically one wire goes to the power terminal and one to the ground terminal. The color of the wire doesn't matter as long as you are consistent.

Once the wires are connected, mount the doorbell on your door frame or wall. The battery will still be inside, but the doorbell will now draw power from the transformer instead of the battery. You can leave the battery in place as a backup, or remove it if you prefer.

What happens if you don't have a transformer

If you don't have an existing doorbell transformer, you have two options: install one yourself (if you are comfortable working with electrical wiring) or hire an electrician.

Installing a transformer yourself means running wire from your home's main electrical panel to the transformer location, then running low-voltage wire from the transformer to the doorbell. This requires turning off power at the breaker, running new wire through walls or conduit, and connecting it to a breaker or fused disconnect. Most homeowners should not do this — mistakes can cause fires or electrocution. The cost of hiring an electrician for this work is usually $300 to $600, depending on how far the transformer needs to be from the panel and how difficult the wire routing is.

Given that cost, many people find it simpler to just use the Ring doorbell on battery power. The battery lasts several months under normal use, and you can charge it by removing it and plugging it into a USB outlet. If you use the doorbell heavily (frequent live view or two-way talk), hardwiring makes more sense. If you mostly get motion alerts, battery power is usually sufficient.

Hardwiring versus battery-only operation

Battery-only operation means you charge the battery every few months. This is convenient if you don't want to run wires, but it requires you to remember to charge it. If the battery dies, the doorbell stops working until you charge it again. Some people miss deliveries or security events because the battery was dead.

Hardwiring means you never have to charge the battery. The doorbell draws power from your home's electrical system continuously. If you use features like live view or two-way talk frequently, hardwiring reduces the load on the battery and extends its life. You can still remove the battery if you want, but the doorbell will work without it.

The downside of hardwiring is the upfront work and cost of running wire. If you already have a transformer and the wire route is straightforward, it is worth doing. If you don't have a transformer and would need to hire an electrician, the cost may outweigh the benefit unless you plan to use the doorbell heavily for years to come.

Frequently Asked Questions

Can I hardwire a Ring doorbell without removing the battery?

Yes. The battery can stay in the doorbell while it is hardwired. The doorbell will draw power from the hardwired connection first, and the battery will charge slowly in the background. You can remove the battery if you want, but leaving it in place gives you backup power if the hardwired connection fails.

What gauge wire do I need for hardwiring?

Standard doorbell wire is 18-gauge or 20-gauge copper. Both work fine for Ring doorbells. The wire size does not need to be larger because doorbell transformers output very low voltage and current. Use whatever gauge matches your existing doorbell wire if you are replacing an old system.

Do I need a permit to hardwire a Ring doorbell?

If you are running new wire from your electrical panel to install a transformer, most jurisdictions require a permit and inspection. If you are using an existing transformer and just running low-voltage wire to the doorbell, a permit is usually not required. Check your local building department to be sure.

What if my transformer outputs more than 24 volts?

Ring doorbells are rated for 16 to 24 volts. If your transformer outputs more than 24 volts, do not hardwire the doorbell — you risk damaging it. Have an electrician check the transformer or install a new one with the correct voltage.

Can I hardwire a Ring doorbell to a standard electrical outlet instead of a transformer?

No. Standard outlets output 120 volts, which will destroy the doorbell. You must use a transformer that steps the voltage down to 16 to 24 volts. This is a safety requirement, not a preference.