For electricity, telecommunications, machine tools and other equipment as directed in the signal , notice the signal, accident signal and other indicating signal.Adopts LED lamp with the characters of and low energy consumption, concealed terminal is both safe and creditable.Product Name : BuzzerIndicator LEDLightModel No. : AD16-22SMVoltage /Current : AC 220VPin Number : 2Material : ABSLight Color : Green, RedMount Hole : 22mm/ 0.87inchSize : 29 x 65mm/ 1.1inch x 2.6inch(D*H)Weight : 37gPackage Contents: 2 x Buzzer Indicator LED Light ( Green + Red)Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.