(This review was collected as part of a promotion.) Received this to try and review from influenster. 
Really love the idea and concept. Installation was easy breezy with a step by step guide on the app. Once installed worked well. Able to add different passcodes for different people and delete them after a set time or when we determined to. 
Only set back as other reviews I read is the battery life....it is at 70% after 2 weeks of use....possibly set up took a big chunk so we will see... It is easy enough to swap out batteries but we will need to invest in rechargeable batteries if the life is so short lived. 
Also like to turn it on you have a different number to press so your password doesn't wear down and are able to see what numbers you use.