DC12V 16 Channel Low Level Relay Module with Light Coupling

DC12V 16 Channel Low Level with Light Coupling Power Supply Relay Module

The DC12V 16 Channel Low Level Relay Module with Light Coupling provides reliable control of up to 16 devices with low interference. Featuring light coupling isolation and low-level trigger inputs, this module is perfect for automation projects and industrial control applications.

Specifications

1. Power Supply:

• Operating Voltage: DC 12V
• Quiescent Current: 20mA
• Operating Current: ~300mA

2. Relay Specifications:

• Relay Type: 16-channel
• Trigger: Low-Level Trigger
  • A low signal (0V) activates the relay.
• Contact Capacity: 10A 250VAC or 10A 30VDC
• Relay Model: SRD-12VDC-SL-C
• Relay Life: 100,000 operations (mechanical)

3. Control Signal:

• Input Signal: Low-level trigger (active low)
• Signal Voltage: 0V (active) and 3-5V (inactive)
• Compatible Control Signals: 5V, 3.3V TTL logic (Arduino, Raspberry Pi, ESP8266, etc.)

4. Protection and Isolation:

• Optocoupler Isolation: Ensures electrical isolation between the high-power relay circuit and the low-power control circuit, protecting sensitive control devices.
• Flyback Diodes: Protection against voltage spikes during switching operations.

5. Pin Definitions:

• IN1 – IN16: Control inputs for each relay (Low level triggers the relay).
• VCC: 12V power input.
• GND: Ground.
• JD-VCC: Jumper between VCC and JD-VCC to provide the same power to the relays and control logic.

6. Board Layout:

• LED Indicators: Each relay channel has a corresponding LED that lights up when the relay is activated, offering visual feedback.
• Dimensions:
  • Board Size: Approx. 180mm x 90mm (varies slightly by manufacturer)
  • Mounting Holes: Standard hole arrangement for easy mounting

7. Temperature and Environment:

• Operating Temperature: -25°C to +85°C
• Humidity: 5% to 85% (non-condensing)

8. Application Examples:

• Home automation
• Industrial automation
• Control systems (AC/DC loads, lights, fans, motors)
• Microcontroller-based projects (Arduino, Raspberry Pi)

9. Additional Features:

• Screw Terminals: Provides easy connections for power and load.
• Jumper Settings: Option to separate the control power from the relay power by removing the JD-VCC jumper (useful in certain setups).

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