Specifications

Model SK-4224 Fire Alarm Control Panel Installation/Operation Manual
4-10 151068
Wiring the SK-2884 to an Expansion Device
The SK-2884 uses a three wire connection to all of the SK-4224 compatible expansion
devices (see Table 3-2).
Connect all the expansion devices to the SK-2884 as follows:
4.7.2 SK-2866 LED Annunciator Installation
This section describes how to install the SK-2866 LED annunciator. The SK-2866 is used as a
remote LED annunciator unit for the SK-4224.
SK-2866 Electrical Specification
Wiring the SK-2866 to the SK-2884
Follow these steps to properly wire the SK-2866 to the SK-2884:
1. Unplug the AC power connector from the SK-4224 control panel. See Figure 4-1.
2. Unplug the battery connector from the SK-4224 control panel. See Figure 4-2.
Table 4-1: SK-2884 Wiring Connections
SK-2884
Terminals
To
SK-4224 Expansion
Device Terminal
--
++
D (Data) D (Data)
Circuit Rating
Max Loop Resistance:
Data 50
-50
+50
Max. Current:
Alarm: 85 mA
Standby: 35 mA
Operating Voltage: 24 VDC