OhmKat Power Supplies and Smart Home Accessories

A Video Doorbell on Any Door on Any Home

Front door, back door, garage or casita.
Install a video doorbell anywhere in under 30 minutes
with OhmKat power supplies and chimes.

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Nest Hello Service Advisory

Nest Hello recently pushed a firmware update
that may have affected chime operation.
Find out how to fix it.

OhmKat delivers patented tech, great service and the best warranty available

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Find Leaks Fast!

Trust the Water Wrangler to find leaks
and protect your home from damage.

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Video Doorbell Power Supplies And Relays

Exclusive Patented Wireless Chimes, Lights & Alarms

Thermostat & Sprinkler Power Supplies

Power Blocks

Extension Wires

230v EU and UK Power Supplies and Chimes

Real Customer Feedback

Verified Reviews

Additional Chime Receiver - For Use with Wireless Universal Doorbell Chime and Water Wrangler

Roger Banta

Additional Chime Receiver - For Use with Wireless Universal Doorbell Chime and Water Wrangler

09/28/2023

Wireless Universal Video Doorbell Chime (Patented)

Jesse Dunigans

Wireless Universal Video Doorbell Chime (Patented)

09/15/2023

Door chime

Awesome product, works as promised plug into transformer instant chimes.

Kenneth Barnes

OhmKat Patented Wireless Universal Video Doorbell Chime (G-Type UK Plug) - For Use with Nest, Ring, Arlo, Skybell, Simplisafe, Alula Compatible OhmKat Video Doorbell Power Supplies

09/15/2023

Excellent product

Great company to deal with. Very responsive

John Baker

OhmKat Video Doorbell Power Supply - Compatible with Nest (All Generations Including Hello, Gen 2, Battery(when wired))

09/14/2023

Doorbell chime and Transformer

Plug and play with Simpli Safe Doorbells. Works perfect! Quick shipping and fair price.

Scott Steffer

Wireless Universal Video Doorbell Chime (Patented)

09/14/2023

Works as advertised

Simple plug-and-play setup. I used the existing wires coming off my doorbell, attached those to the OhmKat unit with wire nuts and plugged it into an existing outlet in my attic. Easy peasy.

Richard C Hayes Jr

OhmKat Video Doorbell Power Supply - Compatible with SimpliSafe Pro Smart Wi-Fi Video Doorbell

09/04/2023

Ohmkat chime

Works perfectly! So glad I came across Ohmkat. It solved my problem for getting a chime to work with my Google Nest 2 doorbell. CJ has been most helpful with my queries and even helped me to pair the transmitter and chime as well! Thank you!

Lionel Tan

Additional Chime Receiver - For Use with Wireless Universal Doorbell Chime and Water Wrangler

08/23/2023

glade to here a door bell

This was the easiest way to get a door bell with my house alarm system. Thx

Better @ the beach

Wireless Universal Video Doorbell Chime (Patented)

08/01/2023

Great customer service

Was having problems with my Ohmkat system. Vinny in customer service kept me a satisfied customer!

Dan Hempy

OhmKat Video Doorbell Power Supply - Compatible with Alula Video Doorbell

07/28/2023

OhmKat SimpliSafe PS & Wireless Doorbell

Easily installed with included instructions. Worked well upon installation. Just as advertised. Nicely done item. Thanks.

Jerry Hermel

OhmKat Video Doorbell Power Supply - Compatible with SimpliSafe Pro Smart Wi-Fi Video Doorbell

07/17/2023

Amazing

I love the product. It works great with my blink ring bell. Easy to install.

Irene Aceves

OhmKat Video Doorbell Power Supply for Pro Installers, Security Professionals

07/13/2023

Great deivce

With no existing door bell or wiring this is the only way to go!!! Drill one hole and the rest is plug and play. What a great product

Chumlee

OhmKat Video Doorbell Power Supply - Compatible with SimpliSafe Pro Smart Wi-Fi Video Doorbell

07/05/2023

Great purchase

This chime is easy to and install. Only thing needed is a plug in

Chumlee

Wireless Universal Video Doorbell Chime (Patented)

07/01/2023

Power Supply bought for Nest Video Doorbell

Initially this Power Supply was bought for my Nest Doorbell, but the Nest Doorbell has now failed (just over 2 years old) and I replaced it with a Eufy Video Doorbell. The Ohmkat Power Supply work perfectly with my new bell as does the Ohmkat chimes. Great company to do business with in all respects.

Sean McCormack

OhmKat 230V Video Doorbell Power Supply - Compatible with Nest Hello

06/29/2023

Great Product - Great Customer Service

I have a house built in the mid 50s. It had a door bell at one time but the wiring had failed long ago and the door bell was disconnected. The Ohmkat 24 volt transformer and wireless door bell was just the solution I was looking for to make my SimpliSafe door cam functional. It was a simple install and works like a charm. The wireless bell is loud and has a large variety of rings.

Thomas House

Wireless Universal Video Doorbell Chime (Patented)

06/19/2023