Smart ATO Lite Is A Compact Auto Top Off System For Both Nano And Medium Aquariums. Combined An ATO Level Sensor And A Fail-Safe Sensor In One Pack And Integrated With QST (Quick Security Technology), Which Provides Real-Time Protection Against Any Failure And Detects Water Empty, Smart ATO Lite Offers You A Safe And Economical Choice Of Auto Top Off Systems.Model: SATO-260P Features: The Smallest ATO System Currently Available Suitable For Nano / Medium Aquariums Extremely Easy To Install With Integrated Magnetic Mount No Moving Parts To Fail Dual-Optical Level Sensor In One Pack Provides Dual Protection QST (Quick Security Technology) Provides Real-Time Failsafe Protection Against Failure LED Light Alert Includes: Smart ATO Lite Controller X 1 Power Adapter X 1 DC Refill Pump X 1 Universal Tube Holder X 1 Siphon Break X 1 Tubing 6.5 Ft (200 Cm) X 1 Specifications: Power Input : 100-240 VAC, 50-60 Hz Cable Length Of Power Adapter: 6 Ft (180 Cm) DC Pump : Head : 8.2 Ft (250 Cm) Flow Rate : 74 Gph (280 Lph) Max Mounting Thickness : 1/2 Inch (12.7 Mm) Power : 4.5 W @ DC 12 V Pump Cord Length : 6 Ft (180 Cm) Flexible Tubing Size : ID : 6.5 Mm / OD : 9.0 Mm Length Of Cable Between Sensor And Controller : 4 Ft (120 Cm)