Automatic Power Failure Alarm 220V White 120db Failure Power Cut Off Automatic Warning Alarm Siren Indicator Description: 100% brand new and high quality Power off/failure alarm with led indicator Siren alarms when power is cut off until the power is restored Siren can be silenced with on/off switch With indicator shows the power status High voltage resistant design, works well even when the mains voltage exceeds the rate Computer drawer cover design, you can easily change the battery Using the method: connect the alarm with 220V power, turn on the power switch Size: 10x5. 3 x 2.5cm (Approx.) Cable Length: 85cm (Approx.) Alarm Volume: 120db Power: 9V Battery (Not Included) Voltage: AC 220V Color: White Note: Passage: 1cm = 10mm = 0.39 inch Package No Retail Package. Please allow 1-3mm error due to manual measurement. Please make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: Power failure alarm x 1