This temperature control unit provides accurate, reliable temperature measurement and automatic heating/cooling control for a wide range of applications. It combines a wide measurement range and fine resolution with low power consumption and dual relay outputs to maintain stable environmental conditions. Key benefits Precise monitoring and control: Measures from -50°C to 99°C with 0.1°C resolution, enabling fine temperature adjustment and better process stability. Reliable performance: ±1°C accuracy over the -50°C to 70°C range ensures dependable operation where consistent temperature is required. Dual output control: Two relays allow separate cooling and heating control (each 10A at 220VAC), simplifying integration with HVAC, refrigeration, or heater systems. Low power and wide compatibility: Operates on standard AC 110–220V, 50/60Hz power supplies and consumes less than 3W, making it suitable for many installations. Stable sensing: Includes one NTC sensor and a 1-minute sensor error/response delay to avoid rapid cycling from transient fluctuations. Main functions and specifications Temperature measuring range: -50°C to 99°C Resolution: 0.1°C Accuracy: ±1°C (applicable across -50°C to 70°C) Sensor: NTC type (1 piece) Sensor error delay: 1 minute Relay outputs: Two relays — Cooling: 10A/220VAC; Heating: 10A/220VAC Power supply: AC 110–220V, 50/60Hz Power consumption: <3W Ambient operating temperature: 0°C to 60°C Performance and compatibility Designed to work with common AC mains (110–220V) and standard 220VAC loads on relay outputs. The NTC sensor provides stable temperature readings; the 1-minute delay reduces false switching from brief temperature spikes. Dual relays support separate control circuits for heating and cooling equipment rated up to 10A at 220VAC each. Practical use scenarios 1) Small commercial refrigeration: Control compressors and defrost heaters using the cooling relay for the compressor and the heating relay for defrost or cabinet heaters, maintaining consistent temperatures between -50°C and 99°C as required. 2) Laboratory or incubation chambers: Maintain precise temperature settings with 0.1°C resolution and ±1°C accuracy across low-temperature environments within the specified ambient limits. 3) HVAC or process control for light industrial equipment: Use the dual relays to switch fans, heaters, or chillers on and off while operating directly from standard 110–220V power with minimal power draw. Why choose this unit Accurate and stable temperature control with fine resolution and a built-in NTC sensor. Dual relay outputs simplify setup for systems requiring both heating and cooling control. Low power consumption and broad mains compatibility make it practical for many installations. Built-in delay reduces unnecessary cycling and protects connected equipment. Note: Operate the unit within the specified ambient temperature range (0°C to 60°C) and respect relay current ratings (10A at 220VAC) when connecting external loads.