Matters needing attention: When the liquid level is low, the hand sanitizer should be replenished immediately,otherwise, the hand sanitizer will not flow out normally. The hand sanitizer shall not be mixed with water into the container of the machine,otherwise, the normal discharge of the machine will be affected. Do not make a strong impact on the machine, or it will cause serious damage. If the machine is not used for a long time, please turn off the power switch and take out the alkaline battery. Please do not tilt the fuselage to avoid leakage of liquid soap. This product is only suitable for use in the bathroom and kitchen. Do not flush the machine body with water, otherwise it will cause damage to the. Do not use this product under the sun, or it will affect the function of the product. The machine normal use environment temperature: 3 Deg.C to 40 Deg.C How to Use: Remove the battery cover and insert 4 new AAA batteries(not include). Put the cover back. Twist the top cap to open. Fill the reservoir with liquid soap to about three-quarter of its capacity, close it tightly. To switch on, press power button. Put your hand under the sensor to let the dispenser start to work. To stop soap dispense, just remove your hand away from the dispenser. Dimensions and Weight. Specification Product weight: 0.2500 kg Package weight: 0.3000 kg Product size (L x W x H): 20.50 x 11.00 x 10.00 cm / 8.07 x 4.33 x 3.94 inches