Smart Wireless Sensor Dingdong Doorbell Chime for Wireless Video Doorbell - Black. Feature: - These doorbell chime is dedicated to doorbells. One doorbell can be equipped with multiple doorbell chime devices, or one doorbell chime can be equipped with multiple doorbells. The doorbell chime cannot be used alone. - Great product to keep your house safe. Wireless long-distance transmission.The Ding-Dong can choose any 52 ringtones with adjustable volume. - No tools needed! The direct insertion socket can be placed in the socket of any room. No batteries, no wiring, power saving. - Can be used with a wireless video doorbell. After pairing the doorbell with the video doorbell, when the outdoor doorbell rings, the indoor opportunity sounds. - Perfect Matching for SARCCH MOUNTDOG DEBARK Video Doorbell. - It works great as an entry door bell and also helpful to know when visitors have come in. - This doorbell can be installed at home or office, can also be widely used in dormitories, hotels, hospitals, factories, restaurants and shops. Specification: 1. Item Type: Doorbell 2. Material: ABS 3. Size: Approx. 83x83mm / 3.3x3.3in 4. Voltage: 90 to 260V 5. Color: white/black 6. Weight: 100g 7. Package: retail package Package List: 1 pcs x DingDong Chime for smart video doorbell Dear Partners, Before you list the item to your shop, we would like to let you know below information.All these will be very helpful for our cooperation. 1. We do our best to make sure images are same with the physical products. Whether other products in the illustrations are included, please refer to the packing list. 2. The variations in display settings and lighting conditions may cause slight differences in the actual product's color compared to the images. 3. The proportions depicted in the pictures may not be to scale, so it is advisable to refer to the provided measurements or descriptions for accurate dimensions. We measure the products manually with ruler. A reasonable error with ±1-3cm. 4.Please be aware of  allergy before ordering and using. 5.The jewelry is made of alloy and may fade. Please be aware before order. If the color fades after using, we will not be responsible for the return service. 6.Small Parts. Not for children under 3 years old. 7. All stock in UK.The availability of stock is subject to change. We strive to provide accurate information. But please understand that there might be slight discrepancies due to many factors. Any issue, feel free to contact with us.