Inkbird ITC-308 Digital Temperature Controller Thermostat — Dual-Relay Dual-Display for Heating & Cooling

The Inkbird ITC-308 is a compact digital temperature controller that automates heating and cooling by switching two outputs to keep any enclosed space at a set temperature.

The ITC-308 combines a clear dual-display, a user-settable thermostat, and dual-relay outputs so you can control both heater and cooler devices without complicated wiring or software. Designed for hobbyist and light-commercial setups, it reads temperature via a remote sensor and activates connected equipment to maintain stable conditions. Safety features and customizable delays protect compressors and other loads while alarms notify you if temperatures drift beyond limits or the sensor fails.

How does the Inkbird ITC-308 simplify temperature control?

Setup is straightforward: plug the controller into mains, connect your heater and cooler to the two relay outputs, and place the waterproof probe where you need accurate readings. The large dual-window shows both the current temperature and your target temperature at a glance, reducing guesswork.

• Simple plug-and-play installation for quick deployment
• Dual display shows measured and setpoint temperatures simultaneously
• Switches between heating and cooling automatically using two relays
• Temperature displayed in °C or °F for regional preference

What protection and safety options does it offer?

The ITC-308 includes a built-in buzzer alarm that sounds for high/low temperature events or sensor errors, helping you spot problems fast. You can set compressor delay and maximum load values to avoid short-cycling and to match device limits, reducing stress on connected equipment.

• Buzzer alarm for over/under temperature and probe faults
• Configurable compressor delay to prevent rapid cycling
• Maximum output capacity suitable for many small heaters and fridges
• User-adjustable temperature differentials for stable control

Which environments and devices work best with this thermostat?

Because it supports both heating and cooling outputs, the ITC-308 fits a wide range of uses: cold rooms, fermentation chambers, reptile habitats, seed germination cabinets, homebrewing setups, and more. The waterproof probe and compact enclosure let you position the sensor where accurate air or surface readings matter most.

• Greenhouses and seed-starting cabinets for consistent temperatures
• Fermentation and brewing to maintain precise fermentation profiles
• Pet habitats like reptile terrariums that need day/night control
• Pantry or cellar refrigerators where added control is required

Who is this for? The Inkbird ITC-308 suits DIYers, hobbyists, and small-business operators who need an affordable, easy-to-program thermostat with separate heating and cooling outputs. If you want reliable automatic switching, visible setpoint feedback, and basic alarm and safety options without complex networking or professional installation, this controller provides the necessary features in a compact package.

Technical highlights include a dual-relay design for simultaneous heater and cooler management, Celsius/Fahrenheit display options, audible alarms for abnormal conditions, and a maximum safe output rating that covers many household devices. For installations involving high-current equipment or hardwired permanent fixtures, consult an electrician to confirm load compatibility and ensure safe wiring practices.