Wireless Home Doorbell, Intelligent Ultra-Long Range Electronic Waterproof Doorbell, Suitable for Use in All Types of Houses, Multifunctional Doorbell Features: WIRELESS DOORBELL SET: Includes everything you need for DIY installation – 1 outdoor remote control doorbell transmitter and 1 plug-in smart doorbell receiver, double-sided tape, anchors, screws. EASY TO INSTALL: Our portable doorbell pairs and connects easily so you can make your wireless doorbell battery-powered. Features 5 volume levels, perfect for bedtime or parties. LONG RANGE: Our patented technology uses the highest quality microchips and doesn't need wifi or bluetooth. Signal from the wireless bell extends up to 300 meters. Perfect for large houses, apartments, offices, and warehouses. SMART TECHNOLOGY: We haven't just made the traditional doorbell wireless, we've made it smart. It will remember your customized settings and has sleek, modern LED lights that illuminate and guide guests easily at night. Truly reliable and weatherproof, operating between temperatures of -20°C to 60°C. VERSATILITY: Our wireless doorbells work great for any occasion – apartments, townhouses, small businesses, warehouses, offices, and condominiums can all benefit. Whether you use it outdoors for your front door, backyards, or mailboxes or indoors for teachers seeking helpful classroom organization and management, there's a use for this product. Model: A28 Volume: 5-level volume (adjustable to flashing light) Receiver: Lights up when the bell rings Receiver voltage: Plug in to use (110-220V) Receiver size: 90mm * 56mm * 20mm Remote control distance: Straight line 300M above ground (data from factory laboratory) Product Name: Digital Wireless Doorbell Music: 60 melodies Transmitter: Uses a 12V23A battery Product List: 1x bell + 1x doorbell