DEWIN 12V Single Channel Bistable Relay Module Instruction Manual

Product Overview

The DEWIN 12V Single Channel Bistable Relay Module is designed for control applications requiring a latching switch function. This module operates as a typical bistable circuit: a single trigger press activates the relay, and another press deactivates it. It features screw terminals for easy wiring and is suitable for various DC 12V control systems.

Image 1: DEWIN 12V Single Channel Bistable Relay Module. This image shows the module with its dimensions labeled: 1.5cm (0.59inch) height, 3.5cm (1.38inch) width, and 4.5cm (1.77inch) length. It features a blue relay component, a red LED indicator, and green screw terminals on a green circuit board.

Specifications

Safety Precautions

• Ensure the power supply is DC 12V. Do not use in automotive environments where instantaneous voltage can exceed 12V.
• Always disconnect power before making any wiring connections or adjustments.
• Observe proper polarity when connecting the power supply (12V to positive, GND to negative).
• If operating in environments with strong electrical interference, consider adding a series diode at the input and a 470uF capacitor in parallel to GND for enhanced stability.
• This module is designed for low-level trigger signals.

Setup and Wiring

The module features screw terminals for straightforward connections. Refer to the diagram below for proper wiring.

1. Power Connection: Connect the 12V positive power supply to the terminal labeled "12V". Connect the negative power supply (ground) to the terminal labeled "GND".
2. Trigger Switch Connection: Connect your trigger switch to the terminals labeled "trigger switch". The module responds to a low-level trigger signal.
3. Load Connection: The relay has three output terminals:
   • COM: Common terminal.
   • NO (Normally Open): The circuit is open when the relay is inactive and closes when activated.
   • NC (Normally Closed): The circuit is closed when the relay is inactive and opens when activated.
   Connect your load according to your application's requirements, typically between COM and NO for switching on a device, or COM and NC for switching off a device.

Image 2: Wiring diagram for the DEWIN 12V Single Channel Bistable Relay Module. This diagram clearly labels the power input terminals (power +12V, power -GND), the trigger switch input, and the relay output terminals (relay NC, empty, COM, relay NO).

Operating Instructions

This module operates as a bistable switch. Follow these steps to operate the relay:

1. Ensure all wiring connections are secure and correct as per the "Setup and Wiring" section.
2. Apply DC 12V power to the module. The red LED indicator may illuminate briefly or remain off depending on the initial state.
3. To Activate the Relay: Press the connected trigger switch once. The relay will close (if using NO) or open (if using NC), and the red LED indicator will illuminate, indicating the relay is active.
4. To Deactivate the Relay: Press the trigger switch again. The relay will return to its inactive state, and the red LED indicator will turn off.

This sequential operation allows for simple ON/OFF control with a single momentary switch.

Maintenance

The DEWIN 12V Single Channel Bistable Relay Module is designed for reliable operation with minimal maintenance. Follow these guidelines:

• Keep the module clean and free from dust and moisture.
• Regularly inspect wiring connections to ensure they remain tight and secure.
• Avoid exposing the module to extreme temperatures or direct sunlight.
• Do not attempt to repair the module if it is damaged. Contact support for assistance.

Troubleshooting

Warranty and Support

For warranty information or technical support, please contact your retailer or the manufacturer, DEWIN. Please provide your model number (DEWINr39x10aqcn) and purchase details when seeking support.

Manufacturer: DEWIN

Country of Origin: China