5V 1 Channel Solid State Relay

SunFounderSKU: ST0102

In stock


A solid-state relay (SSR) is just what it sounds like; an IC that acts like a mechanical relay. They allow you to control high-voltage AC loads from lower voltage DC control circuitry. They accomplish this by using infrared light as the ‘contact,’ a solid-state relay is really just an IR LED and a photometric sealed up into a little box.
Solid-state relays have several advantages over mechanical relays. One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid-state relays can be switched much faster and for much longer periods without wearing out.

More details can be found in http://wiki.sunfounder.cc/index.php?title=1_Channel_5V_Solid_State_Relay_Module.


  • Omron 5V solid-state relay (240V, 2A), output port with resistance-type fuse (240V, 2A) 
  • Size: 25 x 34 x 25mm 
  • Input power source: 5V DC (160MA) 
  • Input Voltage of Control Signal: 0-2.5V (low-level state), the relay will be on; 3-5V (high-level state), the relay will be off. 
  • Triggered at a low level. 
  • DC +: connected to the positive power source (supply power according to the relay voltage) 
  • DC -: connected to the negative power source 
  • CH1: 1-channel relay module signal triggering end (effective at low level) 

Package List 

  • 5V 1 Channel Solid State Relay x 1 

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