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)
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