Product functions and features: infrared sensing technology, manual automatic liquid induction, unique motor sound, 4 AAA alkaline batteries, exquisite and compact appearance design. Note: when the level liquid is low, immediately add hand sanitizer, otherwise the hand sanitizer will not flow normally; hand sanitizer cannot be mixed with water and added to the container of the machine, otherwise it will affect the normal liquid discharge of the machine; do not damage the machine Apply strong impact, otherwise it will cause serious damage; if the machine will not be used for a long time, please turn off the power switch and remove the alkaline battery; please do not tilt the body to avoid leakage of hand sanitizer, this product is suitable for use in bathrooms and kitchens; Rinse the body with water, otherwise it will damage the product; Do not use this product in an environment exposed to direct sunlight, otherwise it will affect the operation of the product; the normal operating environment temperature of this machine: 3C~ 40C