Features:

• The module uses genuine quality relay, normally open interfaces
• Using SMD optocoupler isolation, driving ability, stable performance
• The module can be high or low by a jumper setting trigger
• Fault-tolerant design, even if the control line is broken, the relay will not operate
• The power indicator (green), the relay status indicator (red)
• The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient

Specificaions:

• Maximum load: AC 250V/10A, DC 30V/10A
  
• Trigger current: 5mA
  
• Working voltage: 5V
  
• Module size: 50 x 26 x 18.5mm (L x W x H)
  
• Four mounting bolts holes, diameter 3.1mm
  
• DC+: positive power supply (VCC)
  
• DC-: negative power supply (GND)
  
• IN: can be high or low level control relay
  
• NO: normally open relay interface
  
• COM: Common Interface Relays
  
• NC: normally closed relay interface
  
• It is low level trigger when jumper connect to LOW pin
  
• It is high level trigger when jumper connect to HIGH pin