Door contact sensor detects when doors and windows are open or closed. It is a peripheral security sensor that sends alerts to Syscall receivers. Able to detect open state of doors only or both open and close. It can be used when access to restricted area is detected or when guest visit notification is required.
Features
· External antenna improves wireless range
· LED indicator blink when the door is open or closed
· LED will blink continuously for low battery notification
· 3 types available
o A type: Detects when door is open (call)
o B type: Detects when door is open (call) and closed (clear)
o C type: Detects when door is o