5V 6 Channel Low Level with light coupling Relay Module

Specifications

• Product Name: 5V 6-Channel Low-Level Trigger Relay Module with Optocoupler
• Number of Channels: 6
• Trigger Type: Low-Level Trigger (activates when the input pin is pulled low)
• Optocoupler Isolation: Yes (light coupling)
• Operating Voltage: 5V DC

Relay Specifications:

• Relay Model: SRD-05VDC-SL-C or equivalent
• Operating Voltage (Coil Voltage): 5V DC
• Rated Current per Channel (Relay): 70mA (per relay coil)
• Relay Contact Rating:
  • Max Switching Voltage: 250V AC or 30V DC
  • Max Switching Current: 10A at 250V AC, 10A at 30V DC
  • Min Switching Voltage: 5V DC
  • Relay Type: Normally Open (NO) and Normally Closed (NC)
• Relay Life: 100,000 mechanical operations (typical)
• Contact Material: Silver Alloy

Triggering Logic:

• Trigger Mode: Low-level trigger (the relay activates when the input signal is pulled low)
• Input Control Voltage:
  • Logic High: 3.5-5V DC (relay off)
  • Logic Low: 0-1.5V DC (relay on)

Optocoupler Isolation:

• Optocoupler Type: PC817 or equivalent
• Optocoupler Function: Electrically isolates the input signal (from the control board) and the relay circuit, improving noise immunity and protecting the control circuit from high voltage spikes.

Input and Output Interface:

• Control Pin Inputs:
  • IN1, IN2, IN3, IN4, IN5, IN6 (control the respective relays)
• Power Input Pins:
  • VCC (5V DC input)
  • GND (Ground)
• Relay Outputs (Screw Terminals):
  • Each relay channel has three terminals:
    • COM (Common): Common connection for the switching circuit
    • NO (Normally Open): Normally disconnected, closes when the relay is triggered
    • NC (Normally Closed): Normally connected, opens when the relay is triggered

Electrical Characteristics:

• Input Voltage: 5V DC
• Current Consumption (Module):
  • Standby Current: <10mA (when relays are off)
  • Operating Current: 70-75mA per relay channel activated
• Power Consumption: Approximately 450mW per relay when activated
• Maximum Load: 10A/250VAC, 10A/30VDC (resistive load)

Indicator LEDs:

• Power LED: Red LED to indicate module power status
• Relay Indicator LEDs: Each channel has an individual LED (green) that lights up when the respective relay is triggered (active low).

Environmental Specifications:

• Operating Temperature: -40°C to +85°C
• Humidity: 20-85% RH (non-condensing)
• Storage Temperature: -40°C to +125°C

Dimensions and Physical Properties:

• Board Dimensions: Approximately 90mm x 40mm x 20mm (L x W x H)
• Mounting Holes: 3mm diameter (for easy installation)
• Weight: Approx. 70g

Applications:

• Home Automation: Control of household appliances
• Industrial Automation: Switching of industrial devices
• IoT Applications: Interfacing with microcontrollers (e.g., Arduino, Raspberry Pi)
• Robotics and DIY Projects: Control of motors, lights, fans, and other components

Safety and Protection:

• Electrical Isolation: Optocouplers provide electrical isolation between the control side (microcontroller) and the relay side.
• Flyback Diode Protection: Protection for the relay coil from voltage spikes when switching.
• Durability: Suitable for long-term use with resistive and inductive loads.