As shown, the circuit consists of a buck rectifier circuit and a 555 flip-flop. When the hand touches the metal piece A, the sensing signal causes the comparator inside 555 to be turned over, K is pulled in, and the contact K1-1 is closed; if A is triggered again, K is released and K1-1 is turned off. Guangdong Ojun Technology Co., Ltd. , https://www.ojunconnector.com
