Dual mode operation: switch between cool and heat to maintain the desired environment. Precise temperature control: set the temperature set value and the differential value to define the acceptable range. Output protection: refrigerating control output delay protection helps prevent rapid cycling and wear on equipment. Applications: aquarium, terrariums, zoo, paludarium, chicken incubator. Key benefits: keeps stable temperatures for sensitive inhabitants and eggs, reduces the risk of overheating or overcooling, and helps extend the life of cooling and heating devices. Use scenarios: Aquarium: maintains stable water and ambient temperature for fish and aquatic plants. Terrarium or paludarium: provides a consistent habitat for reptiles, amphibians, and plants. Chicken incubator: delivers reliable incubation conditions to improve hatch reliability. Compatibility and performance: suitable with common heating and cooling devices used in enclosure environments; designed for reliable and steady temperature control.