I have this kit for 9 months, no issue at all. I am very satisfied with it. the 2-camera kit is on sale for $180. 3-camera kit for $250.

Extended battery life – 2 year battery life on two AA lithium batteries with a combination of two-way talk, live view, and motion recording. Double the usage of the XT on a single set of batteries when recording video.
2-way audio – Talk to visitors through the Blink app on your smartphone or tablet.
Customizable motion detection – Use activity zones to choose where motion is detected so you receive the alerts that matter.
Free cloud storage – Keep hundreds of clips stored up to a year with no monthly fees or service contract required.
Works with Alexa – View live streams, motion clips, or arm and disarm your system through select Alexa-enabled devices.
Day and night coverage – Record and view in up to 1080p HD video during the day and with infrared HD night vision after dark.
Use indoors/outdoors – Blink XT2 stands up to the elements. Place or mount it inside or outside for whole home security.
Easy setup – No tools, wiring, or professional installation required.

Amazon product: Blink XT2 Outdoor/Indoor Smart Security Camera with cloud storage included, 2-way audio, 2-year battery life – 2 camera kit
Customer Reviews:
Bought the 2 camera for my home easy setup and fast shipping. Easy to use and good to keep an eye on things when your not home. I hard wired it so I don’t have to buy batteries and bought them here as well. I pt them into a outdoor electric junction box which I cut out an opening for the camera and sensors and lag bolted it to my house because the cameras are mounted only 7ft up and do not want anybody to steal them, I used a 4″x4″x2″ plastic electrical junction box. To tamper with them you need a hammer. Pictures later. | Part2 | As you can see after I cut the exterior tabs off the electrical junction box I drilled holes inside to use for mounting it to the house with lag bolts with washer. I then mounted it to the house, to angle it you can use more washers or a thick plastic washer or bolt so your camera can be slightly angled if you wish. I did all this again because my cameras are about 7-8 ft high and can be grabbed and distorted or stolen so this way they would have to really try with a hammer or something which then any thieves will not spend the time to do it and the cameras act as a good deterrent.