iO-SDC2

The Edwards IO-SDC2 is a dual loop controller card for iO Series fire alarm control panels, adding two Signature SLC loops supporting up to 500 device addresses total (125 detectors + 125 modules per loop).
It expands iO1000 capacity in 500-point increments and supports both Class A and Class B wiring configurations with automatic device mapping and Signature protocol communication for larger system applications.
Key Specifications
Feature
Specification
Display
N/A (controller card)
Device Capacity
500 addresses (2 × 250 points)
Loop Type
2 Class B / Class A (Style Z) configurable
Operating Voltage
24 VDC
Standby Current
110 mA
Alarm Current
160 mA
Communication
Signature Data Circuit (20.6 V peak-to-peak max)
Standard Functions
Auto device mapping, Ground fault detection
Mounting
iO Series expansion slot
Terminal Rating
12-18 AWG (0.75-2.5 mm²)
Max Isolators/Loop
64 per loop
Operating Temp
0°C–49°C (32°F–120°F, 0-93% RH)