... Suitable for mounting size 22mm and 25mm Model: B type flash buzzer Life of continuous working: ≥30000hoursThe buzzer is intermittent ... packageTaking LED chip as the light source, AD22 series indicator lamp shows long service life, low energy consumption, small volume ... printing, mining etcWe supply flashing buzzer, sound buzzer, indicator, signal lamp with high quality AD116-22B/MFS Flash buzzer