TREND CONTROL SYSTEMS · PROGRAMMABLE HVAC CONTROLLERS (DDC)

Trend Control Systems

IQ4E Controller

Programmable building HVAC controller from the Trend IQ range.

Technical Identification

  • Manufacturer: Trend Control Systems
  • Model / family: IQ4E Controller
  • Equipment class: Programmable building HVAC controller from the Trend IQ range
  • Application: HVAC automation and equipment control
  • Specifications: Refer to manufacturer documentation for exact hardware, firmware, I/O and power.

Engineering and Compatibility

Verify model suffix, regional regulatory approval, supported communications, application licensing, power supply, I/O combinations and commissioning software against the original technical manual. Specific installation design should be performed by a qualified controls integrator.

The presence of BACnet, Modbus or other protocol support at product-family level does not guarantee it is enabled on every ordering code or firmware revision.

Official Technical Source

Read the manufacturer’s source documentation →

AirAlign independent technical catalog. Source checked October 2026. Features not substantiated for this variant have been omitted.

IQ4E — programmable HVAC points and network

Trend IQ4E is a programmable HVAC controller from the IQ series. Select I/O, panel supply, sensors, actuator types and supervisory communications for the project’s particular point schedule. Verify whether the supplied firmware/application supports the needed Trend network and third-party BMS features; do not infer all IQ4NC networking behavior from another IQ4 model. Test loss-of-BMS communications and local emergency safeties independently.