Be confident in your purchase we're an Authorized Simplicity Dealer. How cool is that?!?!? Features: 4 Individually Programmable Pumps Compact, Space Saving Design Multiple Mounting Options Custom-label Each Pump Head High-precision Liquid Dosing Accurate to 0.1 mL for every 10 mL dosed. The Simplicity 4-Head Aquarium Dosing Pump is an accurate, effective, and affordable liquid dosing solution. The four dosing heads offer high-precision liquid dosing combined with easy-to-use integrated controls. The compact, space-saving design can be flush mounted to a wall or placed on a shelf. The included pump head labels make identifying dosing solutions easy. Built-in Control: Each individually programmable pump can dose as frequently as once per hour or as infrequently as once every 30 days. Flexible Installation Options: Simply place it on a shelf or mount it flush to a wall. The compact design measures 7.9? long x 3.0? wide x 4.0? tall. Quickly Identify Each Pump Head: The included pump head labels make identifying dosing solutions easy. The Perfect Partner: Compatible with all Simplicity Dosing Containers Specifications: Dimensions: 7.9? x 3.0? x 4.0? (L x W x H); does not include tubing Weight: 1.60 lbs Color: Black Power Consumption: 7.5W Power Input: 12V DC Power Cord Length: 5 ft Warranty: 3-year manufacturer prorated warranty Pump Specifications Control: Built-in (Not Bluetooth or Wi-Fi Compatible) (Control or Controllability) Control Interval: Independently-control pump heads from once per hour to once every 30 days Flow Rate: 50 mL per minute Maximum Head Pressure: 5 ft Accuracy: +/- 0.1 mL per 10 mL Dosing Volume: From 1 mL up to 9999 mL What's Included: Simplicity 4-Head Dosing Pump Power Supply Pump Head Labels Measuring Cup Check Valves (5x) Mounting Screws (2x) Spare Pump Head Mounting Template