Note ** Product Property - A precise thermometer controlling the temperature in accordance with a user's setting by detecting the precise temperature within by ±0.5 F error of measure measurement - It can be also used Temperature Controller when you put in heat pump under the main body - Product that is currently exported to American Aquarium company. - It can be used every countries handling sea water tank ** Precaution - When you use this, you have to connect a stabilizer. like earth leakage breaker - When blackout comes or installing product, you have to check set-up temperature - only for cooling, Operating time of compressor is about 3 minutes. Wait a minute please until it operates. - Main body of product should be installed at dry area - Main body of product should be avoided from water - Do not use close to magnetic field - LO on Display : Short at temperature sensor - Temperature is under 0 C - HI on Display : - Short at temperature sensor - Temperature is under 50 C Data - Length of Sensor : 4M - Usable Power : AC 220V / 60Hz , AC 110V / 50,60Hz - Range of temperature : 0C - 50C (Cooling ; 0 C - 20 C . Heating ; 14 C - 34 C) - Accuracy : Within ± 0.5C - Maximum Current Capacity : For Cooling : 20A. For Heating : 10A