Instructions:

1. Power Supply: Connect the 12V DC power supply to the designated terminals.
2. Input Signal: Apply the control signal to the input terminals. Ensure the input impedance is not less than 10kΩ to avoid loading issues.
3. Relay Operation: The relay will switch based on the input signal. The SPDT relay can handle up to 10A at 250VAC.
4. Environmental Conditions: Operate the device within the specified temperature and humidity ranges to ensure reliable performance.
5. Installation: Mount the device in a well-ventilated area to prevent overheating. Avoid placing it in areas with high vibration or shock.
6. Wiring: Use appropriate gauge wires for the load to prevent voltage drops or overheating.
7. Testing: Before final installation, test the relay operation to ensure proper functionality.
8. Maintenance: Regularly inspect the device for any signs of wear or damage. Replace if necessary.