Automatic soap dispenser: equipped with infrared motion sensor, once the sensor detects your hand, the soap dispenser will automatically release hand sanitizer. Very suitable for your bathroom, kitchen, coffee shop, hotel. Einyrllbar switch: the capacity is 400 ml / 13.5 oz and variable dispensing control, soap volume and +/- switch adjust the liquid volume from 0.5 to 3 ml. Compatible with most types of liquids, such as hand sanitizer, hand sanitizer, and disinfectant. Drip-proof and waterproof: Waterproof base and rubber seal design are used to prevent water from entering the battery compartment. The automatic soap dispenser is made of high-quality waterproof technology and has a drip protection function. Soap or water will corrode the circuit board. Durable material: This ABS + PC anti-fingerprint soap dispenser has improved motor performance and can provide a more stable liquid volume. When using 4 AAA batteries (not included) to supply power, the replacement battery can last about 3 months. 1) Open the battery compartment cover and insert 4 AAA alkaline batteries. 2) Open the lid of the container backwards, for the soap solution, and do not overfill it. 3) Press and hold the " Switch " button for 2 seconds to turn on the soap dispenser. The blue light flashes twice. 4) Just tap the " " +/- " " button to easily control the amount of liquid. 5) Put your hand under the sensor, the soap dispenser will automatically start to work