4 Channel relay board for your Arduino or Raspberry PI - 24V

Product Summary

General-purpose 24V relay card with four outputs for irrigation valves, security control systems, and small industrial cabinets. The relay board integrates cleanly with PLCs and bench testing setups without extra DC/DC conversion.

Features

• Power supply requirement - 24VDC;
• Current consumption - 100mA (when all relays are ON);
• 4 SPDT relay channels (the type depends on the stocks quantity in our store):
  • TONGLING - JQC-3FF-S-Z (10A / 250VAC, 15A / 120VAC, 10A / 28VDC)
  • SUNHOLD - RAS xx15 (10A / 250VAC, 15A / 120VAC, 15A / 24VDC)
• Contact type: Normal Opened (NO), Normal Closed (NC);
• Screw terminals for inputs and outputs;
• PCB parameters : FR4 / 1.5mm / two layers / metallized holes / HAL / white stamp / solder mask;
• Extra PCB openings for better voltage isolation;
• Doubled high current tracks;
• Protection diode for each relay;
• Input voltage: 3V - 30V (1.5mA max) must be given to the "In" to switch the relay ON;
• May be controlled directly by TTL;
• Green leds for relay status;
• Red led for power;
• Dimensions: 85mm / 70mm / 20mm;
• Mounting holes diameter: 3mm;
• PCB dimensions - here;

Single relay channel schematic

Add the relay board to your Arduino project

Above is given example for 2 relays only. The relay board must be supplied externally with 24VDC.

Add the relay board to your Raspberry PI project

Above is given example for 2 relays only. The relay board must be supplied externally with 24VDC.

Useful links:

• Controlling inductive loads - http://denkovi.com/controlling-inductive-devices

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