Solid Relay Module 2 channel 5v low level trigger for Arduino

This  Two-Channel Relay module is designed based on 2x Omron G3MB-202P solid-state relays. This 5V 2 Channel SSR Module is capable of switching  AC voltages between 100 and 240V at up to a 2A current.   A solid-state relay (SSR) is simply an IC that functions as a mechanical relay. The only difference between this SSR  with the mechanical relay is that there is no moving contact in a Solid-State Relay.  This SSR allows us to control high-voltage AC loads from lower voltage DC control circuitry. This 2 Channel SSR relay module consists of 3 separate terminals for each relay channel

• NO (Normal Open)
• COM (Common)
• NC (Normal Closed).

Solid-state relays offer numerous advantages over mechanical relays. They can be switched by a much lower voltage and at a much lower current than most mechanical relays. This  2-Channel Solid-State Relay Module is compatible with Arduino and hence interfaced easily. To protect from the excessive current draw, a resistive type fuse is provided on the module.

Triggering at a high level indicates that there exists a forward voltage between a signal triggering terminal and a negative supply voltage. This usually connects positive supply voltage and triggering terminal together. When the triggering terminal contains a positive supply voltage or reaches the triggering threshold voltage, the relay will pull in.

While triggered at a low level resembles 0V voltage between the signal triggering terminal and negative supply voltage. Or the voltage at the triggering terminal is lower than the positive supply voltage. Thus lowers to a triggering voltage, and the relay will pull in. These relay module offers a wide range of applications in AC circuits as a TRIAC but offers only limited applications in DC. Along with that, this relay is suitable to control the AC load, not for DC load.