Heiman Door Window Sensor Starter Kit, 3 Contact Sensors with WiFi Gateway

NOTE: If you haven’t received push app notifications, please check your Heiman app settings. find door sensor – setting – open push notification
Heiman Starter Kit for Your Home Security – This set includes 3× Heiman HS2DS-R Door/Window Contact Sensors and 1× Heiman wifi Smart Gateway (Hub). （The door sensors require the Heiman Gateway to operate and use the Sub-GHz 915 MHz protocol) For stronger wall penetration, extended range, and longer battery life than Wi-Fi sensors.
Real-Time App Alerts & Live Status— Get instant push notifications the moment a door or window opens or closes, and check open/closed status from anywhere in the Heiman app. Ideal for front doors, windows, cabinets, fridges, pet doors, pool gates and valuables.