This site uses cookies. By continuing to use this site you are agreeing to our use of cookies.

S5 Series Step Control

Indeeco’s S5 Series step controller provides low cost precision control for multi-stage applications. Common applications include HVAC duct heaters, process air applications, boilers, and industrial ovens.

Product Highlights

Low voltage 24 VAC microcomputer-based stage controller

Capable of controlling 24 VAC loads

5 stage controller with vernier output stage rated at 100mA

Up to 10 stages of control when using two controllers in a master/slave relationship

Features & Benefits

Micro-computer based control
Accuracy and reliability

Supports multiple input signals
Field adjustable dip switches to support both 0-10 VDC or 4-20 mA signals

Adjustable inter-stage delays
Field adjustable dip switches to support inter-stage delays of 1-75 seconds

Fail Safe
Unit cycles down to full OFF if input leads are open or shorted

Diagnostic capabilities
5 LED status lights provide detailed status information for troubleshooting

Functional test mode
Built-in test mode to verify load wiring and operation


UL Recognized
File E52105, Guide XAPX2/8

Operating & Storage
-22°F to 185°F (-30°C to 85°C)

Relay Outputs
24 VAC ±10%, 24VA max
Relay Wire Range: 10-24 AWG

Power Supply
24 VAC ±10%, 50/60 Hz
6.7 VA max - Base 5 stage operation with vernier output.
Power Supply Wire Range: 10-24 AWG

Input Signal
Impedance: 10KΩ for VDC inputs ; 250Ω for mA inputs
Input Signal Wire Range: 14-30 AWG

Vernier Output
100 mA max ; Wire Range 14-30 AWG


For product specifications, refer to our technical document center.