Rancang Bangun Wadah Hand Sanitizer Pada Pintu Masuk Ruangan Menggunakan Node…

ABSTRAK Use of Hand Sanitizer at the entrance to the room as security for users who are in the room, so that the room is more sterile and all room users use Hand Sanitizer before entering the room. The sensors used in the manufacture of this tool use IR sensors and Ulteasonic sensors. The IR sensor functions to detect existing objects, in this study the object used is the hand. Ultrasonic sens…