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KNACRO DC 5V 3 Channel 30A Relay Module Bidirectional Optocoupler Isolation High Low Level Trigger for Arduino, PLC Equipment, Industrial Systems, Furniture Intelligent Control, Development Test

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Product ID: 46398481
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About the item

  • About this item Bidirectional isolation 3-Channel high-power relay control module, select the high or low signal trigger, only need 3mA current can drive control capability of 30A relay pull.The module uses high-quality relay, normally open interface Maximum load: AC 250V / 30A, DC 30V / 30A; The module uses high-quality power relay, ultra-small package optocoupler, high-power high-voltage transistor, red and blue signal indicator, double-sided PCB board, cloth board to consider a comprehensive, stable performance can be widely used in a variety of power control The Module operating voltage 5V, 12V, 24V to choose from; The user can select the relay control level, can be high level pull, it can be low level pull; module with current limiting resistor, you can directly use the power supply positive and negative control, you can also use the microcontroller I / O Mouth control Fault-tolerant design, even if the control line is broken, the relay will not work;Power indicator (red), 3-Channel relay status indicator (blue); All interfaces can be directly connected through the terminal leads, very convenient; Module size: 6.0cm * 8.5Cm * 2.5cm (L * W * H) (weight 105g); With four fixed bolt holes, easy to install;.
VREF: photoelectric isolation control terminal reference ground, -If a high level control is used: this signal should be connected to the negative of the user's control panel power supply; -If low level control is used: this signal should be connected to the positive terminal of the user's control panel power supply; CH1-3: relay control interface, -If VREF is connected to the power supply negative: When this port is high level (relative to VREF), the corresponding relay is engaged; -If VREF is connected to the power supply positive: When this port is low level (relative to VREF), the corresponding relay is engaged; Note: the isolated relay module in order to adapt to the electromagnetic environment is relatively poor or relatively high signal requirements of the occasion, if you want to achieve a complete isolation effect, the user control panel power supply (that is connected to the VERF reference power) and the relay module power supply (DC + / DC-) should be separated, if the two power supply shared ground, then the effect is not fully isolated, then the user can use the standard relay module. Relay output: 9 interfaces, all interfaces have terminals, user-friendly wiring 1, NO1-NO3: relay normally open interface. 2, COM1-COM3: relay common interface. 3, NC1-NC3: relay normally closed interface. Package Included: 1*DC 5V 3-Channel 30A Relay Control Module
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