MBJ watertight door alarm system
MBJ-1
MBJ-2
Watertight door indicator box
Watertight threshold switch

FHK1 fire door control system
Rm-1b Universal emergency alarm system
Wyc-1 alarm power box
WYC-1A

An-5 Manual button
Dk-7 Waterproof manual button
YLX120Z/J with lamp bell
YLX120PZ/J waterproof bell with lamp
YL120Z/J electric bell
FR – 3 z/J siren
Dwj-22j audible and visual alarm lamp
Dbj-1z /J Explosion-proof sound and light alarm lamp

FR-3Z
FR-3J
SJ-3
YLX120FZ
YLX120FJ
DWJ-2Z
DWJ-2J
SJ-2
DBJ-1Z
DBJ-1J
DK-7