HiLetgo 5V 1 Channel Latching Relay Module with Touch Bistable Switch MCU Control Using double-panel design PCB; MCU control, stable and reliable performance, strong anti-interference, will not trigger by mistake, superior performance than CD4013; With high-power regulator to provide adequate and stable voltage, and have enough cooling holes to ensure long-term stable and reliable products work; With anti-power reverse diode protection, a short time reverse power supply without any damage to the product; The use of genuine Songle relay control load, 250V 10A (AC) and 30V 10A (DC) under the load can withstand; Triggering can also be an external trigger switch, the product is equipped with a good seat and lead wire, more convenient to use.