Enhance your automation and control projects with this 12V Trigger Delay Normally Open Relay Module, designed for reliable and repeated triggering. Featuring an adjustable delay timer, this module offers versatile functionality with a default delay range of 0 to 25 seconds, easily extended by replacing the potentiometer or capacitance to suit your specific timing requirements. Key Features: · Adjustable Delay Timer: Easily set the trigger delay time using the onboard potentiometer (clockwise to reduce, anticlockwise to increase), with a default range from 0 to 25 seconds, allowing precise control over relay activation timing. · Anti-Reverse Protection: Built-in anti-reverse diode on the power supply terminal safeguards the module from damage caused by incorrect polarity connection. · Flexible Trigger Signal Input: Supports both high-level and low-level trigger signals, enabling compatibility with various industrial control systems and repeated triggering without failure. · Wide Application Range: Ideal for use in robotics, car lamp delay circuits, intelligent product development, automation equipment, PLC systems, smart home devices, burglar alarm delay setups, and other electronic development projects. · Compact and Durable Design: Measuring approximately 67 x 16 mm (2.64 x 0.62 inches), this compact module easily integrates into different control panels and projects without occupying excessive space. Specifications: · Delay Time Formula: T(s) = 1.1 × R(Ω) × C(F) (e.g., with a 47µF capacitor and 500KΩ resistor, delay time is approximately 25.85 seconds) · Size: Approx. 67 x 16 mm (2.64 x 0.62 inches) · Operating Voltage: 12V (also compatible with 5V power supply) · Relay Contact: Normally Open (N.O.) with delay after trigger removal Working Principle: 1. When powered, the relay energizes immediately, connecting N.O. to COM. 2. After the adjustable delay time (0-25 seconds), the relay de-energizes, switching COM to N.C. 3. The relay remains de-energized until receiving an external trigger signal. 4. While the trigger signal is present, the relay stays energized and switches to N.O.; once the trigger signal ends, the relay de-energizes after the delay time, reverting to N.C. Package Includes: · 1 x Timer Relay Module This 12V Trigger Delay Normally Open Relay Module provides a reliable and customizable timing solution for diverse industrial and DIY electronic control applications. Its adjustable delay, anti-reverse protection, and flexible triggering capabilities make it an essential component for professionals and hobbyists aiming to enhance automation and control system performance.