Eight-channel optocoupler relay module

✔️ The 8-channel relay module is equipped with transistors, diodes and optocouplers to switch higher loads safely, reliably and with low current. Humanized interface design, all interfaces can be connected directly via the terminal cable, very convenient. Featuring optocoupler isolation, it ensures protection for your control systems against voltage spikes and. 8 Channel 12V Relay Module with optocoupler, ideal for controlling multiple high-voltage devices safely through Arduino, ESP32, Raspberry Pi, and more. [pdf]