Item Name: 5V 1 Channel Relay Module Board Low Level Trigger w/Optocoupler Isolation Newly. Smart TV Box Android Quad Core HDMI 1080P Wifi Streaming Media Player UK
5V 1 Channel Relay Module Low Level Trigger with Optocoupler Isolation Protection Expansion Board
Feature:
1. Output signal indication.
2. Directly connect to MCU output port.
3. Strong anti-interference ability and photoelectric isolation.
4. With Diode current protection.
5. Response time is less than 20 milliseconds.
6. The relay module has a long life and can be continuously absorbed for 100 tho
