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 Inquiry

Standard Features

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

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


HVAC Duct Heaters


Circulation Heaters


Industrial Ovens

Industrial Process Air Applications

Customizable for Specific Applications

Closed Tank Heating

Watt Density

Percentage of Wattage

Need a quote?

We market our products through a nationwide network of representatives. Contact us today!

Scroll to Top