KLR 8 Channel Relay Module Isolated/Bidirection Optocoupler High / Low Trigger / Dual Terminals Dual PCB 5/12/24V Power

KLR 8 Channel Relay Module Isolated/Bidirection Optocoupler High / Low Trigger / Dual Terminals Dual PCB 5/12/24V Power

Description:
- The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A;
- Using the industry's top -quality ultra-compact two-way isolation optocouplers, anti-interference ability , stable performance ; trigger current is only 3mA;
- The module voltage is 5V, 12V, 24V are available ; otherwise one -way , 2-way , 4-way , 8-way modules to choose from ;
- User-selectable relay control level can be high pull, pull can also be low ; module containing limiting resistor can be used directly to control the power of positive and negative , can also use the MCU I / O port control ;
- Fault-tolerant design , even if the control line is broken , the relay will not operate ;
- The power indicator ( red ) , 8 relay status indicator ( blue )
- Interface design humane, all interfaces can be connected directly via terminal wiring leads , very convenient
- Module size : 7.9cm * 9.0m * 1.8cm ( L * W * H )
- With 4 fixing bolt holes for easy installation

Two module interface
- Module control side: 11 line interface, the interface can be directly connected to all leads , user-friendly
- DC +: negative external DC power supply (with 5V, 12V and 24V modules to choose from )
- DC-: negative external DC power supply
- VREF: optically isolated ground reference control terminal ,
       If a high-level control : This signal should be connected to the negative power of the user control panel
       If using low-level control : This signal should be connected to the positive supply user control panel
- CH1-CH8: relay control interface,
        If VREF negative one : This port high ( relative to VREF) when the corresponding relay
        If VREF positive power supply : When this port is low ( relative to VREF) corresponding relay
- Note : Isolated relay module is designed to adapt to the environment is bad or electromagnetic signals high demand for the occasion , if you want to achieve complete isolation , the user control panel power ( ie connection VERF reference power ) power supply and relay module (DC + / DC-) to be distinguished , if the power of the two , the effect is not completely isolated , then the user can choose a more economical in our standard relay module .
- Relay outputs : 24 line interface, the interface can be directly connected to all leads , user-friendly
      NO1 - NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM
      COM1 - COM8: Relay Common Interface
       NC1 - NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant