WiFi Door and Window Sensor: Wireless Contact Sensor with Free App Notification Alerts, Smart Door Sensor for Alarm System & Smart Home Automation, Compatible with Alexa Google Home(1Pack)

We've been using one of these on our back swinging door for over a year. The door sees a lot of foot traffic. I actually have it set up along the back edge of where the door opens (hinge side) so it won't get knocked off the door amidst the numerous opening/closing it goes through. I'm the year, we have changed batteries twice. I the second go-round I used rechargeable AAAs. This time I'm using Energizer Ultimate Lithium AAAs to see how long they last.I also installed one inside of our mailbox and set up a Smart (routine) to turn our LED lights on the back of our TV to pink once the mail box is opened/closed by the carrier, so we have no more failed mail checks. It works flawlessly. See photos for reference.How to pair with your Wi-Fi:Download the Smart Life app and press the + in the upper right corner to add the sensor. Select Wi-Fi on your phone and join your 2.4ghz band. If you don't do this, you won't be able to connect. After adding batteries to the sensor, press and hold the RESET button on the end of unit using something little and sharp such as a skewer or needle. If you don't do this, it won't connect. The red light will start flashing, first kind of slowly, and then the flashing speeds up. The app should pick up the sensor. Follow the prompts and let it do its thing. If for some reason the Smart Life app doesn't see your new sensor, double check that your phone is connected on the 2.4 GHz wifi band, reset the unit again as above, and manually add it by pressing +, selecting the 'Sensors' category on the left, and choose the "Contact Sensor (Wi-Fi)" from the list, and follow the prompts. Be sure to edit the sensor name to something specific to meet your needs and so it is unique from other sensors ("Cookie Cabinet"). Now you're good to go. Play with the Smart feature of the app to set up routines to interact with other devices using this app.

What I like most is that the notification ring is loud, waking you up I’m at night if needed. Good price, fairly easy to install, wish it worked with 5g

Work nice and that app is excellent not only for this item different items at your house

DO NOT PURCHASE!!! First, let me say I am very technically capable and my house is almost fully automated. Product installation is very easy and looks clean. The issue is after a day or 2 it goes offline and cannot be reconnected. Followed every instruction and FAQ advice with no solution working. I looked in the comments and see this issue is very common and will advise everyone to DO NOT BUY!!!Returning item for a refund.

We got this to work with Alexa. I wanted a one touch arm and disarm could not figure it out. We even hired a Nerd computer guy. He came over and told me it wasn’t possible so I’m buying another kind. These were great if you only use your phone and want to arm and disarm manually each device.Or if you want to monitor cabinets opening and closing and getting alerts, no parties for the teenagers!! Lol

I wasn't sure that the wi-fi would work from the refrigerator and freezer, but they did. I must mention that I have a wi-fi mesh satellite within 6 ft or the refrigerator, so I can't guarantee that they will work for everyone from within a refrigerator. I had lost a lot of food due to our cheap 2nd refrigerator getting hot because the door was not shut all the way and it doesn't have magnets to pull the door to. Now I get a notification on my phone if the temp is above 42°. I can also ask Alexa what it the refrigerator temperature or what is the patio temperature. I haven't measured these against another thermometer so I don't know how accurate they are. I can tell you that I have been alerted that the refrigerator temp was over 42° and the door was slightly open. So it paid for itself already.

Yes seriously. You won’t be notified if you’re not actively using the app. Waste of money.

Instalación muy sencilla

facil de instalar, y me sirvió mucho mas de lo que pensaba