Smart sensor with WiFi technology to detect open doors and windows. Product features: Wireless smart contact sensor for checking closed/open windows and doors. Simple and flexible installation with adhesive tape and wireless operation. Rechargeable battery (6 months operating time per charge with 5 activations per day). Network protocol: WiFi. Product benefits: Notification when the contact status changes. Records the contact history. Easy control of compatible SMART+ WiFi products based on contact changes. Areas of application: Only for interior lighting. Technical equipment: A smartphone or tablet is required for control via the LEDVANCE SMART+ WiFi app (from Android 4.4 or from iOS 9.0). Integrated rechargeable battery. Charging cable and installation kit included.