TP-Link "Smart Door/Window Sensor SPEC: 868 MHz, battery powered(1*CR2032), 3M tape paste Feature: Tapo smart app, Tapo IoT hub required, smart action, door/window open detection, battery included, 3M bonding tape included, CE / UKCA certified"
"Smart Door/Window Sensor SPEC: 868 MHz, battery powered(1*CR2032), 3M tape paste Feature: Tapo smart app, Tapo IoT hub required, smart action, door/window open detection, battery included, 3M bonding tape included, CE / UKCA certified"