5V 8 Channel High-Level Solid State Relay Module

Specifications

• Product Type: Solid State Relay (SSR) Module
• Channels: 8 (eight)
• Input Voltage: 5V DC
• Trigger Type: High-Level Trigger
• Relay Type: Solid State (SSR)
• Control Signal Level: High-level trigger (typically greater than 3.3V)
• Isolation: Optocoupler Isolation for each channel
• Input/Control Current: 15-20mA per channel (when active)

Relay Specifications:

• Operating Voltage: 5V DC (control voltage for the relay input)
• Operating Current: 160mA-200mA (for all 8 channels active)
• Switching Voltage (Load Voltage):
  • AC Version: 240V AC
  • DC Version: 24V-60V DC (varies with version)
• Switching Current (Load Current):
  • AC Version: 2A at 240V AC per channel
  • DC Version: 2A at 24V-60V DC per channel
• Response Time: ≤10ms for switching

Input Specifications:

• Trigger Voltage: High-level trigger (logic 1 for activation)
  • High-level trigger typically means input voltage ≥ 3.3V to 5V
  • Low level: ≤ 1.0V
• Control Pin Compatibility:
  • Compatible with 3.3V and 5V logic systems (Arduino, Raspberry Pi, PLCs, etc.)
• Optocoupler Isolation: Each relay channel has optocoupler isolation for protection against noise and surges

Electrical Characteristics:

• Load Voltage (AC version): 75V to 240V AC (some versions go up to 380V)
• Load Voltage (DC version): 5V to 60V DC (depends on the specific model version)
• Current Capacity (per channel): 2A continuous
• On-state Voltage Drop: ≤1.5V (when the relay is closed)
• Off-state Leakage Current: ≤1mA (when the relay is open)

Environmental Specifications:

• Operating Temperature Range: -30°C to +70°C
• Storage Temperature Range: -40°C to +85°C
• Humidity: 20% to 85% relative humidity (non-condensing)

Mechanical and Mounting Specifications:

• PCB Dimensions: 138mm x 56mm x 19mm (approximate)
• Mounting Holes: Four mounting holes with 3mm diameter (one in each corner)
• Mounting Type: Can be mounted via screws or placed in enclosures
• Weight: Approximately 100g-120g

Protection Features:

• Over-current Protection: Each relay can protect against current overload up to 2A per channel
• Optocoupler Isolation: Provides electrical isolation between the control input and the output load
• Over-voltage Protection: Protection against high input voltages or surges
• Reverse Polarity Protection: Prevents damage if input polarity is reversed

Application and Use Cases:

• Suitable for:
  • Controlling AC loads such as lamps, motors, heaters, and household appliances
  • DC loads like fans, DC motors, solenoids, or DC lighting
  • Industrial and home automation
  • Controlling power in IoT systems and DIY projects
  • Microcontroller (e.g., Arduino, Raspberry Pi, ESP32) and PLC-based projects
• Advantages of Mechanical Relays:
  • Silent operation (no mechanical clicking sound)
  • Longer lifespan (no mechanical wear)
  • Fast switching speed
  • Higher reliability for applications requiring frequent switching

Input/Output Interface:

• Input Pins:
  • 8 signal input pins for each relay (IN1, IN2, IN3… IN8)
  • Separate ground (GND) and VCC for control input
• Output Terminals:
  • Each relay has three terminals: NO (Normally Open), COM (Common), and NC (Normally Closed)