1. Automatic induction: no need to touch. 2. Easy to DIY with any empty bottle. 3. To understand the working principle of the intelligent automatic liquid dispenser. 4. Building your own automatic liquid dispenser is really and a project. 5. DIY (Do It Yourself) wonderful project can be easily assembled, very useful for getting the solution on hand without touching it. 6. This project will research and development induction hand washing motherboard, TCRT5000 infrared sensor, water pump, and features: DC 3v to 6v pump consumption: 0.4W to 1.5W rate: 80-120l/ The infrared sensor detects the presence of the hand. Turn the sensor's potentiometer and increase it slightly to get the detection range you want. You can fill your dispenser with any liquid you want. no direct contact Contact-free and pollution-free Smart Liquid Dispenser Discharge make your own liquid dispenser yourself with this toolkit By following the instructions and steps, you can build your dispenser in no time, the DIY kit does not come with a container or reservoir to store liquids. Colour: color Material:plastic Package Contents: 1 x Auto Sensing Hand Pump Kit Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.