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Self-locking switch generally refers to the switch with mechanical locking function. If you press it, the button will not jump up completely after releasing it. It is in a locked state. You need to press it again to unlock and jump up completely. In the electrical automatic control circuit, control signals are manually sent out to control contactors, relays, electromagnetic starters, etc.
JESSINIE 10Pcs RC Absorption Snubber Circuit Module RC Loop Module Relay Contact Protection Circuit Electromagnetic Anti-Interference Module
KWD 5.500
JESSINIE XY-GMOS High Power MOS Tube FET Trigger Switch Driver Module PWM Conditioning Electronic Switch Control Board DC 4V-60V
KWD 3.500
JESSINIE 5Pcs 1 Channel DC 3V/3.3V Power Relay Module 3V Relay Switch Module with Optocoupler Relay Module Isolated Drive Control Board 10A 250VAC 10A 30VDC Control Development Board
KWD 4
5V/12V/24V 8 Channel Optocoupler Relay Module Board with High/Low and Trigger Power Indicator Light(24V)
KWD 5
