Alarm output
Model 1, 2, 3 series all have an open collector output
Connection one for model one: to directly drive a weak load, such as LED, buzzer, etc.
Connection two for model one: connection method for external extension relay.
Model 4, 5, 6 series have a dry contact output.
Connection one for model two: be able to drive 1A maximum current to drive 1A maximum current
Connection two for model two: connection method for external extension relay connection method for external extension relay
Alarm input
For 1, 2, 3, 4, 5, 6 series cameras
