temperature and humidity controller

A temperature and humidity controller is an electronic device designed to automatically monitor and regulate both temperature and humidity in an environment. The 220V AC version is mains‑powered and widely used in incubators, greenhouses, aquariums, food storage, and industrial automation. It uses sensor probes to measure ambient conditions and controls connected appliances (like heaters, humidifiers, fans, or dehumidifiers) through relay outputs.

🔹 Key Specifications

• Power Supply: 220V AC (direct mains input)
• Display: Digital LED/LCD screen showing real‑time temperature and humidity values
• Sensors:
  • Temperature probe (NTC thermistor or PT100)
  • Humidity sensor (capacitive type)
• Control Range:
  • Temperature: −50°C to +99°C (model dependent)
  • Humidity: 0% – 100% RH
• Accuracy: ±1°C (temperature), ±3% RH (humidity)
• Relay Outputs:
  • Heating/Cooling control (up to 10A)
  • Humidifying/Dehumidifying control (up to 10A)
• User Interface: Buttons for setting thresholds, hysteresis, and calibration
• Modes: Heating, Cooling, Humidifying, Dehumidifying

🔹 Features

• Dual Control: Manages both temperature and humidity simultaneously.
• Automatic Regulation: Maintains stable environmental conditions without manual intervention.
• Adjustable Settings: User can set upper and lower limits for both parameters.
• Compact Design: Panel‑mountable, easy to install.
• Safety Functions: Sensor error detection, relay isolation, over‑temperature protection.
• Versatile Use: Works with heaters, fans, humidifiers, and dehumidifiers.

🔹 Applications

• Incubators: Egg hatching requires precise temperature and humidity control.
• Greenhouses: Maintains optimal conditions for plant growth.
• Aquariums/Terrariums: Ensures stable climate for aquatic and reptile life.
• Food Storage: Prevents spoilage by controlling humidity and temperature.
• Industrial Automation: Used in drying systems, HVAC, and climate chambers.

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