Features: 1. Circulation pumps is non-self-priming pumps. This pumps is centrifugal pumps, it can39;t vent the air automatically, so it must be operated by submersible installation. 2. Max flow rate: 800L/H210GPH; Max lift height: 4m 13ft; Working temperature: 0C - 60C/32F - 140F. 3. The outlet of the pumps is 1/2in male thread, easily connect with a hose, detachable and cleanable. No need any tools. 4. Submersible installation and entirely waterproof, the point straight in line with the pumps body is the water inlet, vertical to the pumps body is water outlet. 5. Super long working life, small, high efficiency, low consumption, low noise less than 35db. Fit for fountain, pool, pet aquarium, fish tank, solar circulation system, water circulation system, hydroponic systems, etc. Notice: 1. Working at rated voltage DC12V/1.5A . The positive pole is red wire, the negatives pole is black wire. Excessive voltage and current will affect the life of the pumps. 2. This pumps is centrifugal pumps, it can39;t vent the air automatically, so it must be operated by submersible installation. 3. Preventing any hard particles entering the pumps. 4. When blocking, long-running is not allowed. 5. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Specification: Material: ABS Power consumption: 19w Working voltage: DC12V Rated current: 1.5V Maximum flow: 800L/H 210GPH Maximum lifting height: 4 meters 13 feet Entrance diameter: 0.5 inches Outlet diameter: 0.5 inches Noise:Waterproof rating: IP68 Service life: more than 30000 hours Working temperature: 0C-60C / 32F-140F Product size: as picture show Power cord: about 50cm Thread: 1/239;39; Male Thread Color: black How to choose pumps: Working environment temperature and medium Make sure the dimension threaded interface or not, the direction and diameter of outlet and inlet Make sure the working voltage, current, head and flow. The Max head means the static head. The pumps can lift to the max height when there is no flow. If you want special flow at special height, you must choose more higher head than the height you want to pumps. Package List: 1 x water pumps