Feature: 1. Wide Uses: Used for control of household appliances, control of various lamps in the home, control of factory equipment, suitable for control of various low current control high voltage and high power items 2. High Performance: Using single chip microcomputer for control, stable and reliable performance, strong interference resistance, no false triggering, far superior than CD4013 3. Stable Work: The high power voltage regulator tube provides sufficient and stable voltage, and there are enough heat dissipation holes to ensure stable and reliable work for a long time 4. Protection: With reverse prevention power supply protection diode, and short term reverse power supply will not cause any damage to the self locking relay module 5. Easy to Use: The trigger can also be connected to external trigger switch. The self locking relay module is equipped with terminal block and lead wire, which is more convenient to use Specification: Item Type: Self Locking Relay Module Material: Electronic Components Panel Design: Double Panel Design PCB Supply Current: Greater than 100mA Load: 250V 10A AC or 30V 10A DC. Package List: 1 x Self Locking Relay Module Note: The power supply is required by the line diagram, and cannot be reversed. Although there is protection circuit, cannot be reversed for a long time.