This is a 5v Relay board that operates with 6-30V 1-Channel Delay Power Relay Module with LED Display.
It has an onboard adjustable timing cycle switch. It is used in various applications like Home Automation, Automatic projects, any other application which needs delay timer control switching.
This module has a display with timer set buttons, is easy to operate, and also supports a micro USB 5.0V power supply. It can control DC 30V 5A or AC 220V 5A output device.
High-level trigger (3V-24V) signal ground and system to improve the system’s anti-jamming capability (also short-circuit altogether).
With optocoupler isolation, enhanced anti-jamming capability, industrial-grade circuit board, set parameters for memory after power failure.