NVR/Alarm Panel

Alarm COnnection

Alarm Port

The alarm port is shown as below. The following figure is based on the 78 series.

Icon	Function
1～16	ALARM1～ALARM16. The alarm becomes activated in the low level.
NO1 C1，NO2 C2，NO3 C3，NO4 C4	Four NO activation output groups. (On-off button).
NO5 C5 NC5	One NO/NC activation output group. (On-off button).
CTRL 12V	Control power output. Disable power output when alarm is canceled. Current is 500mA.
＋12V	Rated current output. Current is 500mA.
GND
A/B	485 communication port. They are used to control devices such as PTZ. Please parallel connect 120TΩ between A/B cables if there are too many PTZ decoders.

Note

• Different models support different alarm input ports. Please refer to the specifications sheet for detailed information.
• Slight difference may be found on the alarm port layout.

Alarm input port

Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN 1～16) of the NVR. Connect the negative end (-) of the alarm input device to the ground end () of the NVR.

Note

• There are two alarm input types: NO/NC.
• When connect the ground port of the alarm device to the NVR, you can use any of the GND ports ().
• Connect the NC port of the alarm device to the alarm input port (ALARM) of the NVR.
• When there is peripheral power supplying for the alarm device, please make sure it is earthed with the NVR.

Alarm relay specifications

Model:		JRC-27F
Material of the touch	Silver
Rating（Resistance Load）	Rated switch capacity		30VDC 2A, 125VAC 1A
	Maximum switch power		125VA 160W
	Maximum switch voltage		250VAC, 220VDC
	Maximum switch currency		1A
Insulation	Between touches with same polarity		1000VAC 1minute
	Between touches with different polarity		1000VAC 1minute
	Between touch and winding		1000VAC 1minute
Surge voltage	Between touches with same polarity		1500V (10×160us)
Length of open time	3ms max
Length of close time	3ms max
Longevity	Mechanical		50×106 MIN (3Hz)
	Electrical		200×103 MIN (0.5Hz)
Temperature	-40℃ ~+70℃