Noorio H200 Contact Sensor Alarm for Door and Window, Wireless Doorbell Chime with 2-Year Battery, Smart Alarm System with App Alerts for Home Security, Requires Noorio Smart Hub to Work

[Instant Alerts] Whenever the sensor and the receiver is separate, a notification will be sent to your phone app, and the smart hub indoors will be activated with customized chime, like dog barking or birds twittering.
[Functional]The door alarm can alert you when kid opens the door, pet passes through the gate, or thief breaks in by window. It can also act as a wireless doorbell chime for business when entering.
[Alarm System for Home Security] With the smart hub, the contact sensor can activate other noorio devices to co-work. For example, when someone opens the door, the indoor camera would starts recording.
[2-Year Battery Life] About every 2 years the battery needs to be changed for one 3WH/3V CR123A battery.
[Customer Support] Noorio offers 1-year warranty due to quality issues, and life technical support. As fast as from minutes to 24 hours will you receive a reply.