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

This compact 12V temperature controller features a 3-digit LED display for setting and monitoring temperature, along with a built-in 10A relay for switching heating or cooling loads. It uses an NTC thermistor probe (included) for measurement across a wide range of −50 to 110°C.

The relay operates as normally open and closes when the measured temperature rises above the set point. It re-opens once the temperature falls 2°C below the set point, providing built-in hysteresis to prevent rapid relay cycling.

Key Features

• 3-Digit LED Display – Shows current temperature and set-point during configuration
• 10A Relay Output – Normally open, switches at the set temperature with 2°C hysteresis
• Wide Measurement Range – −50 to 110°C with ±0.1°C accuracy
• Waterproof NTC Probe – 10K (0.5%) sensor included for reliable temperature sensing
• Panel-Mount Design – Compact module fits a 46 × 26.5 mm panel cutout

Specifications

• Input Power – 12V DC
• Temperature Range – −50 to 110°C
• Accuracy – ±0.1°C
• Control Resolution – 0.1°C
• Refresh Rate – 0.5 s
• High-Temperature Protection – 0 to 110°C
• Sensor – NTC 10K (0.5%), waterproof
• Static Current – ≤35 mA
• Relay Active Current – ≤65 mA
• Operating Environment – −10 to 60°C, 20–85% humidity
• Module Size – 48.5 × 40.1 × 15.8 mm
• Panel Cutout – 46 × 26.5 mm
• Weight – 22.3 g

Ideal For

• Homebrew and fermentation temperature control
• Incubator and terrarium heating systems
• 3D printer heated bed or enclosure regulation
• Aquarium and hydroponic temperature monitoring

Package Contents

• 1× 12V Temperature Controller Module
• 1× Waterproof NTC Temperature Probe