According to the Fire Alarm Controller (GB47 17-2005), the volume of fire alarm and fault sound of the fire alarm host is the maximum by default, and it cannot be adjusted at will, let alone turned down. Therefore, the alarm volume of the Jade Bird graphic display device cannot be adjusted.
"Fire alarm controller" is a patent applied by Wuxi Lantian Electronics Co., Ltd. on1October1July, 2003. The patent application number is 200320 1 107925, the announcement number is CN2664092, and the announcement date is 2004 12.