I am selling items I no longer use as part of organizing my belongings. This item is from clearing out my child's room, as they have moved out for work. I may not be able to answer questions as I am not knowledgeable about the item, but thank you for your consideration. (❁ᴗ͈ˬᴗ͈)" Thank you very much for viewing. (^-^) ● Product Information SwitchBot Contact Sensor W1201500 The SwitchBot Contact Sensor smartly monitors the opening and closing of doors and can be operated by voice. - Brand: SwitchBot - Model Name: Contact Sensor - Compatible OS: iOS/Android - Function: Smart home integration - Control Method: Voice control - Connection Method: Bluetooth/Wi-Fi ● Condition The box was damaged, so I opened it for photography and to check the condition, but it is a new, unused item. (❁ᴗ͈ˬᴗ͈)" Please check the condition in the photos. ⬇ ⬇ ⬇ ⬇ ⬇ ◤◢◤◢ Request ◤◢◤◢ If there are any operational defects or problems after the item arrives, we will provide a refund. Please contact us before giving a rating. (We cannot provide support for junk items, as they are assumed to be broken.) We cannot provide support after the rating has been given, so thank you for your understanding. ◤◢◤◢ Request ◤◢◤◢ 【Please Note】 Everything in the photos is included in this listing. Please understand that if manuals, boxes, or other accessories (parts) are not shown in the photos, they are not included. (❁ᴗ͈ˬᴗ͈)" Thank you for your consideration. (*ˊᵕˋ*)