• Close-up of the 2-channel 24V relay module showing input and output terminals.
  • Top-down comparison of the 2-channel and 4-channel 24V relay modules.
  • Side profile view of the 2-channel and 4-channel 24V relay modules.
  • Angled view of the 2 and 4-channel 24V relay modules, highlighting high/low trigger selection.
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24V Relay Module - 2 & 4 Channel with High/Low Level Trigger

24V Relay Module - 2 & 4 Channel with High/Low Level Trigger

HK$15.00
HK$15.00
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Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

Safely Control High-Power Loads with Your 24V System

This 24V relay module, available in 2 or 4-channel options, is the perfect bridge between your low-voltage control circuits (like a PLC, MCU, or industrial controller) and high-power AC/DC loads. It allows you to use a safe, low-voltage 24V signal to control lights, motors, solenoids, and other demanding devices.

 

Key Features

  • 24V DC Operation: Designed specifically for 24V systems, making it ideal for PLC and industrial automation projects.
  • Selectable High/Low Level Trigger: Easily configure how your relay activates. Use the onboard jumpers (S1, S2, etc.) to choose whether a HIGH (24V) or LOW (0V) signal turns the relay ON.
  • Optocoupler Isolation: Features built-in optocouplers (opto-isolators) that completely separate your control circuit (PLC/MCU) from the high-power load. This protects your delicate electronics from voltage spikes and electrical noise.
  • High Switching Capacity: Each relay (SRD-24VDC-SL-C) is rated to handle heavy loads:
    • 10A @ 250VAC
    • 10A @ 30VDC
  • Clear Status Indicators: Equipped with a power-on LED and individual status LEDs for each relay. Instantly see which channels are active, making troubleshooting a breeze.
  • Secure & Easy Wiring: All inputs and outputs use convenient screw terminals for reliable, secure connections. No soldering required.

How to Use

  • Power: Connect your 24V power supply to DC+ and DC-.
  • Trigger Setup:
    • Move the S1/S2/etc. jumper to the High side for a high-level trigger.
    • Move the jumper to the Low side for a low-level trigger.
    • Connect the Com (common trigger) pin to your logic's common ground (0V) or positive (24V) as required by your setup.
  • Input Signal: Send your 24V control signal from your PLC or MCU to the IN1, IN2, IN3, or IN4 pins.
  • Load Wiring: Wire your device (e.g., a light or motor) using the three output terminals for each channel:
    • NC (Normally Closed): Contact is closed when the relay is OFF.
    • COM (Common): The central pin your load is wired through.
    • NO (Normally Open): Contact is open when the relay is OFF (closes when activated).

Specifications

  • Variants: 2-Channel, 4-Channel
  • Coil Voltage: 24V DC
  • Trigger Type: High / Low Level (Jumper Selectable)
  • Relay Model: SRD-24VDC-SL-C
  • Max Load: 10A 250VAC / 10A 30VDC
  • Isolation: Optocoupler
  • Input Terminals: DC+, DC-, IN1, IN2 (IN3, IN4 for 4-ch)
  • Output Terminals (per channel): NC, COM, NO
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