Translations:Buzzer/17/en

The system rule internally implements tone and volume recalculation (see section on recalculation) and work with pwm via sysfs (see corresponding section). Outside, the user has access to the "buzzer" device, which has several mqtt controls:

Device	Control	Type	Max value	Description
Buzzer	Frequency	range	7000	Sound frequency
	Volume	range	100	Volume,%
	Enabled	Switch		Enable/Disable