I got a Video Doorbell v2 but I was running a VD v1. My original system I installed in my house 22-1/2 years ago is the NuTone IM-4406 Base Station and all the remote stations. At the front door, I had the pushbutton/speaker outdoor station and have the optional AI-29 Chime Module. This system uses two (2) internal transformers.
When I installed the v1, I put in a new, dedicated transformer and wired the v1 to it. I added the Wyze door chime add-on and then just abandoned-in-place the existing IW-6 cable for the pushbutton and speaker. Everything worked fine after adding the transformer. I also added the Wyze Remote Chime Unit that works with the DB v1.
Now that I have a v2, I have read all of the posts I could find on the WCC (WDCWSLU). I wanted to reuse my NuTone electronic chime feature since I am giving up the v1 remote chime box. But this WCC seemed impossible to get any real information on what is in the black box. I am an electrical engineer and I am frustrated by the lack of any type of true schematic on the WCC.
After a lot of research including re-reading the Wyze forum articles and a few YouTube videos, I was able to surmise what the RED, BLACK and WHITE wires are connected to in the circuit, I added a simple 24VAC relay (“OONO” from Amazon $15) to the WCC and wire the normally open contact into my NuTone Base Station to mimic the original contact closure of the pushbutton. I was then able to make the Video Doorbell v2 work with the existing NuTone system. Here is the basic wiring diagram:
I mounted the components on a custom base panel that I made on my CNC router and used an " ABS Plastic Junction Box, Dustproof Weatherproof IP65 (158mm x 90mm x 46mm)" that I got on Amazon (parts list at bottom).
I already had a separate 24VAC / 40VA transformer that I installed when I put in the Wyze Video Doorbell V1, so I reused that transformer for the new Wyze Video Doorbell v2. This is the schematic:
And a detailed diagram of the OONO Relay:
After bench testing this circuit and mounting all of the components, it was time to mount the box. This is the installation with the junction box cover removed:
With this circuit and the OONO normally open relay contact, virtually any chime module can be used, since the n/o contact mimics the pressing of a standard doorbell switch. It works especially well if you have a different transformer for the chime, than the one you want to use to power the DB v2, This is what the finished installation looks like:
And this is what the IA-29 Deluxe Chime Modules looks like installed in the IM-4406 Base Station:
NOTE: The Wyze Video Doorbell V2 must be powered on and remain powered on for 20-30 minutes to “initialize” which just means it needs time to charge the internal capacitor. In the app under “settings > chime” you will get the “Device must initialize…” message. It says to try again in 15-20 minutes but another installation note on the Wyze support page indicates charging will take 20-30 minutes. In my installation, I waited about 35 minutes and then could proceed with the configuration. Return to “settings > chime” in the Wyze app (I can only vouch for the Android version) and then select "Doorbell Chime Type: and set to “Digital” and also set the “Ring Tone Length” to “1 second” (this worked for my installation, you may need to adjust for your installation). When I pushed the doorbell switch on the DB v2 I heard the local chime and also a sound I have not heard in several years: the NuTone IM-4406 chimes, and in every room with an intercom! You will also see the LED indicator on the OONO turn ON for 1 second (or whatever time you set for your chime duration).
I hope this helps someone out with a tricky installation. Here is the list of components I used to make the junction box:
(1) ABS Plastic Junction Box, Dustproof Weatherproof IP65 Electrical Box - Universal Project Enclosure Pale Pale Grey, with PC Transparent/Clear Cover and Fixed Ear 6.2"x3.5"x1.8"(158x90x46mm)
Awclub ABS Plastic Junction Box, Dustproof Weatherproof IP65 Electrical Box - Universal Project Enclosure Pale Pale Grey, with PC Transparent/Clear Cover and Fixed Ear 6.2"x3.5"x1.8"(158x90x46mm) - Amazon.com
(1) OONO DPST 1NO 1NC 8Amp Power Relay Module, AC/DC 24V Control Voltage
Amazon.com: OONO DPST 1NO 1NC 8Amp Power Relay Module, AC/DC 24V Control Voltage : Industrial & Scientific
(1) Glarks 70Pcs(5Sets) Terminal Block Set, 5Pcs 7 Positions 600V 15A Dual Row Screw Terminals Strip + 5Pcs Pre-Insulated Barrier Strips + 60Pcs Insulated Fork Wire Connector (7P+Fork Connector)
Amazon.com: Glarks 124Pcs(8Sets) Terminal Block Set, 8Pcs 3 4 5 6 7 8 10 12 Positions 600V 15A Dual Row Screw Terminals Strip + 16Pcs Pre-Insulated Barrier Strips + 100Pcs Insulated Fork Wire Connector : Industrial & Scientific
(NOTE: I used a 7-pole because that is what I had in my stock, but a 6-pole could be used and save a little panel space)
–Dave Z
