Bosch NBN-921 User Manual

en | Installation

DinionHD 720p IP Camera

AR18-10-B013 | v1.52 | 2011.06

Installation and Operation Manual

Bosch Security Systems

Alarm and relay connector pins

–

AWG 26-16 max.(0.13-1.5 mm

2

); cut back 5 mm (0.2 in) of 

insulation.

–

Impedence: Internal pull-up 10 kOhm to +5 VDC.

–

Input voltage range: -5 VDC minimum to 40 VDC maximum.

–

Input voltage treshold: low voltage 0.8 V maximum, high 

voltage 2.4 V minimum.

–

Configurable as active low or active high.

Use the alarm input to connect external alarm devices such as 

door contacts or sensors. A zero potential make or break 

contact can be used as the actuator (use a bounce-free contact 

system).

–

Max. wire diameter AWG 22-28 for both stranded and 

solid; cut back 5 mm (0.2 in) of insulation.

–

Output relay switching capability: Max voltage 30VAC or 

+40 VDC. Max 0.5 A continuous, 10 VA.

–

Max. 42 V allowed between camera ground and each of the 

relay pins.

1

Alarm in 1

2

Alarm in 2

3

Relay out contact 1

4

Ground

5

Ground

6

Relay out contact 2

Alarm

1

2

3

4

5

6

5 mm 

(0.2 in)