Information: Specification 100% good condition and new Color: Blue Generating area: 2525mm Generating voltage: 0-0.9V Using instructions: 1. Block the lower air outlets on both sides. 2. The upper outlets on both sides are connected to the gas device by a conduit. 3. Respectfully deliver the O2 and H2 through the positive and negative electrodes of the battery. (O2-positive, H2-negative) 4. Open the lower outlet and plug it to drain the air from the battery. 5. Connect the load. Package Included: 1pc of Fuel cell electric power generation module (PC) Because of the light irradiation or computer display difference, please understand we can't guarantee photos and real color is 100% same. If you have any question, please contact us before buy it.