Self-stick 励式 with LED Electronic Buzzer. DC Power Supply will give you and alarm, the LED lights up. The buzzer rings while you will continue to light up the LED.
[Specification] mounting: Lock Nut (mounting holes diameter Φ 32) Main Body Dimension: Φ 36.5 ± 23.5 mm ± 0.2 tone rated: DC V 18mA: Carlin (continuous sound) LED Color: Red Volume: 95dB (distance 30 cm) Operating Temperature Range: – 20 to + 70 °C Note: Self-Stick 励式 Operating Voltage: DC3 ~ 15 V