Door Sensor Mini, Requires Tapo Hub, Long Battery Life w/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time Notification, Smart Action (T110)

I bought these because I wanted to be able to keep track of when certain doors were opened, especially when I'm away. I already had a Tapo H500 hub, so installation was simple. The most difficult part is figuring out where and how to attach them to the door, especially on doors that swing inwards. I couldn't make it work on my back door, because there isn't enough clearance for the door to pass the small half of the sensor, but all the other doors it fits with no problems. You will sometimes need to attach the adhesive to an edge that it wasn't designed for, but it still seems to work. I particularly like how I can set up a routine so that when a door is opened, it sounds a chime on the hub. I can't tell you how many times I've been startled by a roommate suddenly appearing at my office door because I didn't hear them open the hall door. This isn't a problem any longer. These sensors are a much better price than the ones from Aeotec, and much more reliable than the ones from Sonoff.

Both the hub and sensors are easy and straightforward to setup. The hub is first setup by connecting it to your WiFi router via a 2.4 GHz wireless network. It needs an available wall power socket. The sensors connect wirelessly to the hub and are associated with it using the phone or tablet app which also facilitates configuring the hub and sensors. There is a siren on the hub that, depending on its configuration, can function as either an alarm (set to it's loudest setting) or a chime when a sensor is triggered. I also have several wireless motion-detection sensors (Passive Infra-Red) connected to the hub - everything works smoothly with no fuss. The sensors attach to a wall or door jamb with double-sided tape. This system is superior to my home alarm system due to the facility of instant notifications on my smart phone and the ability to control it from anywhere with an internet connection.

These are really nice little door/window sensors. Super easy to connect to the hub and super easy to install. I put one on my entry gate, protected from the weather, so I know when a deliver person opens the gate. Rings a chime on the hub and I can beat the porch pirates to my packages. Others go on the doors and if you have a cabinet you want to keep the kids/maid/strangers out of you can install on the insider of a cabinet door and get a notification on your phone if it was opened. Amazon Alexa integrates as well so you can ask questions like "Alexa is my back door closed" and she will say "The backdoor is closed (or open)" depending on if it is open or closed. If you are clever you can put them on your garage door and get a notification if you left it open more than a certain amount of time with a smart action. If you have Tapo light switches opening the front door at night can turn on an entry hallway light if you want. Replaceable batteries, buy these but be sure you get the hub to use them

Easy to install. The included adhesives hold steady and so far the battery life has worked. Note that you do need a Tapo hub (H100,H200, or H500) to make this work and pair it with the Tapo app. The setup process guides you through each step. You have the option of customizing this with triggers such as sounding a bell or playing a custom sound from one of your Tapo cameras. This alone is where I believe the product falls short. For having the hub play a sound when a door or window is open/the sensor is activated, you are stuck with choosing a predefined set of doorbell sounds. There is no custom sound option, only to shorten the sounds already had. The workaround to this is if you have an indoor Tapo camera. Then you can make a trigger to play a custom recorded sound when the sensor detects the door or window is open. All in all, great if you are in the Tapo ecosystem and do not mind these minor shortfalls. If the battery life goes close to a year, I will consider this a solid investment.

Easy connections to the app. Easy notification for sounds from the hub as well as turning lights on and off for visual indicators. On sale reasonable cost.

I got these to use in place of a reed switch for my garage doors. I was having trouble finding decently rated reed switches on amazon, reports of melting and incorrectly operating switches glore. Yikes! These work great for this application, and in retrospect, not having to run a wire to a reed switch resulted in a much easier overall installation. Just watch your sensor placement to avoid your doors track. I paired these with some Shelly 1 minis to operate the garage door opener. If you don't want to mess with electrical wiring to the Shelly, get the Shelly 1 plus version, and you can wire it to a standard 12v DC power cord, and use an normal outlet instead. You'll have to replace the batteries in these sensors every few years, but that's easy and cheap enough to do once in a while. They seem durable, I dropped one from 7 feet up onto concrete, and it still works just fine. I set these up in the Tapo app, and then added them to Home Assistant. The tp-link integration works great with the hub and t110 sensors, and they can be used locally without requiring the Tapo app. The sensors sensors seem much more responsive via Home Assistant vs the Tapo app. The only downside is the price, the t110 sensors sell for $20 a piece, but given the quality of reed switches on amazon, I'd rather spend a bit more, and not risk a fire. I purchased another set to install on my entry doors, and will probably put some on my fridge doors eventually as well. If they were cheaper, I'd put them on all my windows too...

Super easy to set up and extremely reliable. The sensors respond instantly, and I had them tied into my Alexa routines within minutes. They trigger lights, announcements, and automations with zero delay. The size is compact, the adhesive is strong, and the battery life has been great so far. If you want affordable door sensors that work smoothly with a smart home setup, these are perfect.

This door alarm worked great. I like that I could setup different alarm triggers. I set one to alarm when the door is opened longer 30 seconds and another alarm that triggers when the door is opened between midnight and 6 am. It’s also nice to setup another hub in our bedroom and have the alarms go off on that hub, mainly when we are sleeping. We had to do this since one hub has to be close to the sensors. It’s also nice to get messages on my phone when the doors open and close. Easy setup.