【Accurate Detection】Adopts high-sensitivity sensor to accurately detect door/window open/close status with low false alarm rate. 【Low Power Consumption】Zigbee wireless technology ensures stable and reliable signal with extremely low working current. The remaining battery life can be checked in real time on App. 【Easy Pairing】Supports entering pairing mode by long pressing reset button for 6s, for simple and quick pairing with a smart gateway. 【Compact Design】Features small size and 32g lightweight design. Easy to install in door/window gap using strong double-sided tape with almost no feeling of attachment. 【Smart Scene Linkage】Supports setting various interlinkage modes trigged by door/window open/close, e.g. lighting, air conditioning, security etc., Weight: 0.0440924524 Pounds, Manufacturer: WENZHOU NOVA NEW ENERGY CO.,LTD