Function: Power off and restore the alarm, the sound of power failure and power-on alarm. 118 decibels: 118 decibel siren sounds, keep the alarm until it is closed or the battery is exhausted. LED light: LED flashing allows you to see alerts far . Flinting only when the power is turned off. Manual control: You can manually turn off the alarm after receiving the alarm. Power:1 section 9V battery (excluding) Working voltage:110-220V Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC100-240V Quantity:1 Pack Colour:White Material:Plastic Package Contents: 1 * Power Failure Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!