Note: This item comes with AU plug, please confirm the voltage of your area before purchasing.DescriptionThe wireless design of the doorbell is convenient and safe, bringing you more convenience to the greatest extent. It can realize long-distance super-strong obstacle transmission, and provide you with more ringtone options. This is an excellent wireless doorbell that will serve you well.Features- Color: White. - Material: ABS, electronics. - Size: About 8.20X8.20X5.50cm/3.22X3.22X2.16in. - Voltage of Plug-in Receiver: 110-260V. - Consumed power: 0.2W. - Battery of Transmitter: 1 x 12V 23A Alkaline Battery (Built-in). - Ringtone: 55 Melodies (Optional). - Wireless Distance: 300M in open air. - Sound Volume: 5 Levels, 25-100db. - Silent Mode: Support. - Transmitter Waterproof Level: IP55. - Working Frequency: 433.92MHz280KHz. - Working Temperature: -30~+70. -AU: 230V. - Wireless connection, ultra-low power consumption, remote active wake-up, quick start. - Support mobile APP remote viewing (you can see everything happening at home no matter where you are). - Made of quality ABS shell material and electronic accessories, it can be for durable and long time use. - Combined with unique long-distance technology, enable the wireless distance of the product to reach 300 meters in the industry under the same power consumption. - Adopting simple design style, stylish and elegant appearance, simple, let the doorbell embellish the beauty of the family.