53x18x18.5mm 1 Channel 12v Relay Module With Optocoupler Low Level Trigger Expansion Board

1 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board

Product description:

• Module Size: 53x18x18.5mm
• Blue KF301 terminal, more convenient
• One normally open pin and a normally closed pin
• Relay can directly control all kinds of equipment and load
• Signal input with a low level signal, the common pin and the normally opened pin will connected
• Have power and relay operation instructions.The LED will be lit when relay on
• The double FR-4 circuit board design
•  With optical coupling isolation, triggering more reliable, more stable
• This module conform international safety standard, the isolation groove between control areas and load area