So my AD110 doorbell went dead after 11 months. I went to Armcrests website and called the number to get it replaced under warranty. First off you get an option on the automated message to hit a number to connect to start a RMA. Wrong, it goes to a non working extension number it says. So I dial there general sales number, I explain to the poorly speaking English lady that the door bell is dead. Nada, nothing, doesnt do a thing. She tells me then that we will reboot it, I explain again ...its dead. You cant reboot a dead unit that doesnt power on. Then she tells me that my transformer must be dead. I explain that I installed a new Reolink doorbell in its place and that works fine. I also explain that I am an electronics tech, just give me a RMA number so I can sent this dead unit back to get replaced. She puts me on hold for 10 minutes. GRRRR. Took at least 10 tries to get her to pronounce the RMA number to understand her so I could write it down correctly her english was so bad. Oh well, I have a new Reolink doorbell that seems 10x better then the Armcrest ,and I dont think I will ever buy another Armcrest product again. Looking over Armcrests Facebook page and the number of other mad customers comments I see why.