Perfect for energy conversion of the water into electrical energy mechanical equipment Directly used to charge small battery, mobile phone, or power supply for LED lights, etc Output current: Max. greater than equal 220mA Line resistance: 10.5+/-0.5ohm Insulation resistance: 10Mohm (DC100 megohmmeter) Closed outlet pressure: Max. 0.6Mpa Opened outlet pressure: Max. 1.2Mpa Starting water pressure: 0.05Mpa Axial clearance: 0.2-1.0mm Mechanical noise: less than equal 55dB Output characteristics: output voltage without the voltage regulator circuit is proportional to the water pressure Installation: standard household 1/2 inch water pipe (Outer diameter:20mm, inner diameter:13mm) voltage: 5V colour:Transparent + yellow Material:plastic size:About 8.8x5.8x3.9cm Package Contents: 2 x Generator Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.