SILENT KNIGHT 4821 - Power Limiting Circuits

Model 4821/4820 Control/Communicator Installation Manual
4-4 150964
4.5 Power Limiting Circuits
The Model 4821/4820 is power-limited for over-current protection. When you remove the
short, circuits self-restore.
2 Zone 2 Input For zone 2-16 inputs:
12 VDC max. at 1.4 mA
3 Zone 3 Input
C+ Zones 3 and 4 Power Output
4 Zone 4 Input
5 Zone 5 Input
C+ Zones 5 and 6 Power Output
6 Zone 6 Input
7 Zone 7 Input
C+ Zones 7 and 8 Power Output
8 Zone 8 Input
9 Zone 9 Input
C+ Zones 9 and 10 Power Output
10 Zone 10 Input
11 Zone 11 Input
C+ Zones 11 and 12 Power Output
12 Zone 12 Input
13 Zone 13 Input
C+ Zones 13 and 14 Power Output
14 Zone 14 Input
15 Zone 15 Input
C+ Zones 15 and 16 Power Output
16 Zone 16 Input
T-RING Telco Ring
T-TIP Telco Tip
P-RING Premises Ring
P-TIP Premises Tip
Table 4-1: Control Panel Terminal Descriptions
Name Terminal Description Electrical Ratings