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Perfect for energy conversion of the water into electrical energy mechanical equipment Directly used to price small battery, mobile phone, or energy supply for LED lights, and so on Output current: Max. equivalent 220mA Line resistance: 10+/-0 Insulation resistance: 10Mohm (DC100 megohmmeter) Closed outlet pressure: Max. zero Opened outlet pressure: Max. 1 Starting water pressure: zero Axial clearance: zero Mechanical noise: less than equal 55dB Output characteristics: output voltage with out the voltage regulator circuit is proportional to the water strain Installation: ordinary kin 1/2 inch water pipe (Outer diameter:20mm, inner diameter:13mm) voltage: 12V colour:Transparent + yellow Material:plastic size:About 8*5*3 Package Contents: 1 * Generator Only the above package content, other merchandise usually are not included. Note: Light and diverse displays could cause the colour of the article in the photo a bit of diversified from the real thing. The measurement allowed error is +/- 1-3cm.