Simple circuit design of sound and light display alarm

Photocoupler

The sound and light alarm device is an alarm signal device that is used in a dangerous place to emit a warning signal to people through sound and various kinds of light, and does not ignite flammable and explosive gas. Explosion-proof sound and light alarm is suitable for installation in explosive gas environment with IIC class T6 temperature group. It can also be used in explosion-proof areas of Zone 1 and Zone 2 with explosion-proof requirements in petroleum, chemical and other industries. It can also be used in open air and outdoor. It can be used with fire alarm controllers of any manufacturer at home and abroad. When an accident such as an accident or fire occurs at the production site, the control signal sent by the fire alarm controller activates the sound and light alarm circuit to emit an audible and visual alarm signal to complete the alarm. This product can also be used with the manual alarm button to achieve simple sound and light alarm purposes. This product meets the requirements of GB3836 series standard (satisfying GB3836.1-2000 "General requirements for explosion-proof electrical equipment for explosive atmospheres" and GB3836.2-2000 "Explosion-proof electrical equipment explosion-proof type "d"" standard), by country The designated testing organization has identified and obtained an explosion-proof certificate. The alarm housing is made of stainless steel, the lamp housing has strong impact resistance, 180 clear and super bright LED tube, equipped with super buzzer, stable operation, long service life, low power consumption, free from pollutants. And the effects of water and other characteristics.
Main technical parameters 1
Working voltage: DC18V~26V quiescent current: ≤500μA Alarm current: ≤60mA Sound level: >80dB Line system: Two bus 24V (red), GND (black) Installation method: exposed wall hanging working temperature: -10 °C ~ +55 °C Relative humidity: ≤95% Dimensions: 122 × 73 × 44mm (height × width × thickness) Weight: about 150g