The D-D Dual Heating & Cooling Temperature Controller offers precise and reliable control for aquarium, reptile, or terrarium environments. This plug-and-play device requires no wiring and automatically manages both heating and cooling systems to maintain your chosen temperature range within 0.3°C. Featuring a clear backlit LCD display and both visual and audible alarms, it provides accurate and dependable temperature regulation for your setup. Key Features: Plug-and-play operation – no wiring required Controls both heating and cooling within ±0.3°C of target Audible and visual alarms for temperature deviation 2m coated temperature sensor with suction cup for secure placement Heating control up to 1600W (resistive load) Cooling control up to 600W (inductive load) Backlit blue LCD display with power-off memory Specifications: Temperature range: -40°C to 99°C Accuracy: ±1°C (-30°C to 50°C) Temperature differential: 0.3°C – 16.0°C Alarm range: 0.5°C – 5°C from set point Power supply: 220VAC ±10%, 50/60Hz Power consumption: ≤3W Operating temperature: -10°C to 60°C Humidity range: 20% – 85% Display unit size: 95 x 50 x 15mm Control socket size: 160 x 70 x 45mm This controller is ideal for maintaining stable water or air temperatures in aquariums, vivariums, or other controlled environments. Its safety features and ease of use make it suitable for both professional and hobbyist applications.