描述
- 4 channels solid state relay module make it more convenient to connect control line. Solid state relay module board with small body and stable performance. The 4 channels solid state relay is closed when the voltage between the trigger terminal and the negative pole of the power supply is 0V or close to 0V.
4-Channel Solid State Relay, 5V High Level Trigger DC to AC Solid State Relay Module with 2A Fuse for DIY, Engineering, Industrial Automation, Home Automation, Robotics Projects, Smart Device Control