DescriptionThis item is designed for the fastest possible installation. This small gadgets will alert and warn people stay far away from danger field when it detected smoke. The detector adopts the special structure design, has the dustproof, mothproof and anti outside light interference feature etc.Features- Color: White. - Material: ABS - Size: Approx. 10 x10 x 3.4cm. - Volume : 85db - Working current : 40mA - Voltage : 3V - for durable and long-lasting use.-Professional and easy to install. - Adopts the special structure design, has the dustproof, mothproof and anti outside light interference feature etc. - Suitable for detect the smoke in house, shop, hotel, restaurant, office building, school, bank, library, computer house and storehouse etc. - Good choice for your home safety.