I am sorry to hear you had problems with your set up, and I fully endorse your recommendation for safety. One year after installation, my hardware is still going strong with no issues. I fully endorse your recommendation for safety.

Note on the first photo that the transformer output cables run upwards one on each side of the transformer. I then soldered the short strip of mains blue wire to the neutral wire in the transformer and soldered the short strip of mains brown mains wire to the other input wire on the transformer, so wiring colour makes clear which is which.

1 Person Made This Project!

If you are connecting the chime on it's own (i.e. no Nest components) as per the wiring diagram on the prior step, and works ok when testing it, then install the Nest Hello following the instructions in the Nest app (the ones AFTER the video) for a 2 wire installation. Some small wire connectors (see photos) - the ones I got came on a strip of 12. I only used 3, as I soldered together some of the wire joints (more compact than connectors) They are for illustration purposes only, as your home's push button wiring set up may be different from mine.

All the best in however you decide to fit, but had to tell my story so you have all the details before making your own choice. Then one day, I came home after a morning out, and returned to the Chime box making a horrible loud buzzing sound. I smelt burning, could see some smoke and when I touched the Chime box, it was VERY HOT and had melted somewhat. Cut the mains power, and replace your previous chime with this one. Connect it to mains using the other end of the cable connectors (brown wire to brown wire and blue wire to blue wire).I wanted to give an update. I had been using my setup without issues for around 6-8 months. The Chime box when touched was always warm where the transformer was based and also where the Chime Connector was, but there were not any issues. If it works normally (ding dong), you are ready to install your Nest Hello. Follow the instructions on the Nest Hello app (not the ones in the video), selecting the version for a 2 wire connection.