Io Hvac Controls q4c-a-r00 4 Sensor Digital Controller

Product Description

The IO HVAC CONTROLS q4c-a-r00 is a Q4C Series 4-sensor digital controller with an integrated relay board featuring four SPDT relays rated at 10 amps each. This controller is designed to monitor multiple temperature or environmental inputs and trigger relay outputs based on programmed setpoints. It serves as a central control point in residential HVAC systems where multi-zone or multi-sensor logic is required. Licensed HVAC technicians and controls installers are the primary trade professionals who specify and install this type of unit.

The q4c-a-r00 is intended for residential HVAC applications. It is suited for installations where up to four sensors must be monitored simultaneously and relay-driven outputs need to be switched based on those readings. Typical use cases include multi-zone temperature control, equipment staging, or auxiliary heat sequencing in residential forced-air or hydronic systems. No specific compatible models or systems were identified in the available product data.

Key Features

• Supports four independent sensor inputs for multi-point monitoring
• Integrated relay board with 4 SPDT relays rated at 10 amps each
• SPDT relay configuration allows both normally open and normally closed switching
• Digital controller interface for precise setpoint programming
• Q4C Series design suited for residential HVAC control applications

Compatibility

Designed as an OEM-style replacement or retrofit digital controller for residential HVAC systems requiring four-sensor input and relay-based output control.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage control wiring and relay board integration. Disconnect and lock out all power to the system before removing or installing the controller. Verify sensor wiring and relay output assignments against the system wiring diagram before energizing. Follow applicable local codes and manufacturer documentation during installation.

Technical Specifications

• Number of Sensor Inputs: 4
• Relay Type: SPDT
• Number of Relays: 4
• Relay Rating: 10 amps
• Application: Residential
• Series: Q4C

Standard Information

• Brand: IO HVAC CONTROLS
• Manufacturer Part Number: q4c-a-r00