ITEM NAME:3x 220V/380V/110V/36V ADD-22SM LED Flash Alarm Indicator Signal Lamp wit VCD Descriptio n Description: Performance parameter 1. Power frequency withstand voltage: 2.5KW AC, 1min 2. Insulation resistance: greater than 2 megohms 3. Comparison tracking index: CTI is greater than or equal to 100 4. Allow voltage fluctuation: 48V or lower when the fluctuation is allowed to be 5% positive or negative; Ue is greater than 48V when the fluctuation of plus or minus 20% is allowed 5. Brightness: greater than or equal to 75mcd 6. High brightness: greater than or equal to 150mcd Environmental parameters 1. Working temperature: -25 Â ° C ~ + 55 Â ° C 2. Relative humidity: 98% 3. Installation category: Level III 4. Pollution level: 3 Specifications: Material: Plastic Random Color Size: 66*28mm Package Included: 1 * AD16-22SMÂ LED Flashing Alarm Indicator Light Note: Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! New AD16-22SM LED Flash Alarm Indicator Signal Lamp with Buzzer 2.5KW AC 1min.1 AD16-22SM LED Flashing Alarm Indicator Light. New AD16-22SM LED Flash Alarm Indicator Signal Lamp with Buzzer 2.5KW AC 1min. Brightness: greater than or equal to 75mcd. High brightness: greater than or equal to 150mcd.