Uxcell DC 12V Power Supply Adjustable Trigger Delay Time Relay Module

High quality delay chip design, with far better performance than 555 chip; has power reversal protection DIODE, the effectively protecting the product; LED indicator light for power and time indication optocoupler isolation for better circuit protection can be accessed by high current loads (250V AC 10a or 30V dc 10a); for household appliances, electronic equipment protection, industrial control, plc control, electronic experiments, Arduino robot, has a wide range of applications please take off jumper S5 when you want to control AC power, or the module risks getting damaged.