Cat Wi-Fi Light Switch

I've been adding custom Wifi light switches around the house. I created this one for my daughter who loves cats. I remixed it from Mattias_Selin's great design "Tiffany the Cat".

**PLEASE NOTE THAT YOU ASSUME FULL RESPONSIBILITY FOR THE SAFE AND PROPER INSTALLATION OF THIS SWITCH. YOU ARE RESPONSIBLE FOR FOLLOWING ALL OF YOUR AREA'S GOVERNMENTAL REGULATIONS/STANDARDS THAT APPLY TO THIS INSTALLATION. IF YOU DO NOT FEEL COMFORTABLE WITH THIS THEN HIRE A QUALIFIED ELECTRICIAN FOR THE INSTALLATION**

Video Link: https://www.youtube.com/watch?v=HtC63n9KWpI

Purchase Parts:

1. 1x Momentary Switch: https://www.amazon.com/55pcs-Momentary-Button-Switches-8-5x-8-5mm/dp/B00OK4CD84/ref=pd_ybh_a_4?_encoding=UTF8&psc=1&refRID=Y42NJ800VYYQR4GM11M1

2. 1x Sonoff Wifi Switch: https://www.amazon.com/Sonoff-Electrical-Household-Appliances-Compatible/dp/B0773DFQJ9/ref=sr_1_4?s=lamps-light&ie=UTF8&qid=1543102156&sr=1-4&keywords=sonoff

3. 2x M3 screws (5 to 10mm Long): https://www.mcmaste