12V Precision Temperature Controller with 3 digit display 10Amp Relay

A compact digital temperature controller with a 3-digit LED display and 10A relay output. Set your target temperature and the relay activates when the threshold is exceeded, then deactivates when the temperature drops 2°C below the setpoint—perfect for heating or cooling control applications.

Includes a waterproof NTC temperature probe for reliable sensing in various environments.

Key Features

• 3-Digit LED Display – Clear temperature readout
• 10A Relay Output – Normally open, closes when temperature exceeds setpoint
• High Precision – ±0.1°C accuracy with 0.1°C control resolution
• Wide Range – Measures -50°C to 110°C
• Waterproof Probe – NTC sensor (10KΩ, 0.5% accuracy) included
• 2°C Hysteresis – Prevents rapid relay cycling

Specifications

• Power Supply – 12V DC
• Relay Rating – 10A
• Temperature Range – -50°C to 110°C
• Accuracy – ±0.1°C
• Refresh Rate – 0.5 seconds
• Dimensions – 48.5 × 40.1 × 15.8mm
• Power Consumption – ≤35mA (static), ≤65mA (relay active)
• Operating Environment – -10°C to 60°C, 20-85% humidity

Ideal For

• Incubator and terrarium temperature control
• Brewing and fermentation
• Aquarium heater control
• Fan or cooling system automation
• 3D printer heated bed control