Monitoring your doors, temperature, and other important things does not have to be a challenge these days. There are plenty of home automation systems that make that easy. The Elertus Smart Sensor is certainly capable of getting the job done. It can monitor temperature, humidity, movement, and light. It sends you alerts through smartphone notifications. You can use the Elertus App for iPhone and Android devices to customize your sensor on the go. There is no subscription plan to deal with.
The Elertus Smart Sensor + Door Sensor kit lets you monitor your cabin door, wine cellar, or backyard shed. The included door sensor lets you know as soon as the door is opened. Just bring your smartphone, and you are set.