digital temperature controller 220v ac

A 220V AC digital temperature controller is an electronic device used to monitor and regulate temperature in systems powered by mains electricity. It uses a sensor probe (commonly NTC thermistor or PT100) to measure temperature and controls connected appliances such as heaters, coolers, or fans through a relay output. The controller displays real‑time temperature on a digital LED/LCD screen and allows users to set desired thresholds.

🔹 Key Specifications

• Power Supply: 220V AC (direct mains input)
• Display: Digital LED or LCD screen showing current temperature and set values
• Sensor Type: NTC thermistor or PT100 probe (often waterproof)
• Temperature Range: −50°C to +110°C (model dependent)
• Accuracy: ±1°C typical
• Relay Output: Supports loads up to 10A (heaters, fans, pumps, etc.)
• User Interface: Push buttons for setting temperature limits and hysteresis
• Modes: Heating mode (activates when temp < setpoint) or Cooling mode (activates when temp > setpoint)

🔹 Features

• Automatic Control: Maintains stable temperature without manual intervention.
• Direct Mains Operation: Runs on 220V AC, suitable for household and industrial use.
• Adjustable Settings: User can set upper and lower temperature thresholds.
• Compact Design: Easy to mount in panels or enclosures.
• Versatile Use: Works with resistive loads (heaters) and inductive loads (fans, pumps).
• Safety: Relay isolation and over‑temperature protection.

🔹 Applications

• Incubators (egg hatching)
• Aquariums and terrariums
• Greenhouses and hydroponics
• Food storage and refrigeration units
• Industrial temperature monitoring and control
• DIY automation projects

✅ In summary: A 220V AC digital temperature controller is a reliable, mains‑powered solution for precise temperature regulation. It combines a sensor, display, and relay output in one compact unit, making it ideal for household, agricultural, and industrial applications.