Complete fire alarm solution factory for over 15 years
metal magnetic contacts
Security door contacts normally closed reed switch
Door and window alarms door contact sensor switch
Alarm door contacts magnetic door sensor magnetic door switch normally open
Wired Alarm door contacts magnetic door sensor normally open reed switch
magnetic door and window alarms sensor alarm door contacts sensor metal switch
Should my manual call points have covers?
What can we do to prevent carbon monoxide poisoning in winter ？
