Features 1、Flash LED structure, brighter, intermittent buzzing, loud sound. 2、Bottom dustproof base, standard cooling hole, high temperature resistant shell. 3、Multi‑color galvanized screw, anti‑corrosion and anti‑aging. 4、Suitable for use as indicators, warning signals, accident signals and other indication signals in the signals of factory equipment, instrumentation, marine equipment, medical equipment, lathe CNC, oil extraction, textile, electric power, light industry, etc. within 3‑5 minutes. 5、Each set including 10 pcs buzzer,you can install them in any places you like. Specification Item Type:LED Buzzer Brand:BERM® Product Model: AD16-22SM LED Color: Red Lightness: ≥100cd/m² Rated Current: ≤20mA Mounting Aperture: 22mm Package List 10 x Buzzer