TP-Link T110 Contact Sensor, White

Useful product with an easy to use app. I use it for my sheds.

Tapo es seguridad, confianza y fiabilidad. Trabajan bien, la pila ha durado mucho. Conectividad con Alexa cuestionable ya que me salen detectados mas de una vez en la aplicacion. Pero ayudan mucho en la automatizacion de tareas en casa

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.

Bought the H100 hub (mandatory device in order for the sensor to work correctly) from the same seller. It was not compatible with this device, the sensor was US based, and the hub was EU based. Both work on different frequencies, the pairing failed.

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.