sekyo Smart WiFi Door Sensor Home| No Hub Required| App Alert, Works with Tuya Smart Life Devices, Compatible with Alexa, Google Home, Siri| Smart WiFi Door Sensor for Home/Office (Phone Alert, 4)

Sekyo WiFi Smart Door Sensor Alarm for Home | Magnetic Wireless Door Open Alarm Security System | Real-time Notification on Smartphone | WiFi Required | App Control | Easy Installation (Pack of 4)

Panasonic CR2032 Lithium Coin Battery 3V (Pack of 5) - Long-Lasting Power for Keyless Entry Fobs, Toys, and More with Japan Technology

Duracell Alkaline AAA Batteries, Pack of 10