NE555 Delay Timer Relay Module 5V/12V – 0–10S Adjustable Switch

NE555 Delay Timer Relay Switch Module – Adjustable 0–10 Second Delay

Take precise control of your electronics with the NE555 Delay Timer Relay Switch Module. Built around the legendary NE555 timer IC, this compact module delivers a reliable, fully adjustable delay of 0 to 10 seconds — perfect for car dashcam power sequencing, automation projects, pulse generation, and industrial control circuits. Runs on both 5V and 12V DC, making it compatible with a huge range of setups.

Made in Mainland China.

Key Features

• Adjustable Delay Time (0–10 Seconds): Set the exact delay your application requires via the onboard potentiometer. No external equipment needed.
• Expandable Delay Range: Swap out the potentiometer or increase the value of capacitor C1 to extend the delay well beyond the default 10-second range. Delay formula: T = 1.1RC.
• Dual Voltage Support: Operates on DC 5V or DC 12V, covering most hobby, automotive, and industrial use cases.
• Power Indicator LED: An onboard LED confirms that the module is live and powered — no guesswork needed during setup or troubleshooting.
• Relay Activation Indicator LED: A second LED lights up the moment the relay engages, giving you instant visual feedback on relay status.
• High-Load Relay Output: The built-in relay can switch up to AC 220V / 10A — capable of controlling devices up to 2000W.
• Relay Current Protection: Onboard protection circuitry safeguards the relay from damaging current spikes.
• Monostable (One-Shot) Operation: On power-up, the relay activates after the set delay and latches — ideal for "delayed start" and "power-on sequencing" applications.

Specifications

What's in the Box

• 1 × NE555 Delay Timer Relay Switch Module

Common Applications

• Car dashcam / driving recorder delayed power-on
• DIY home automation delay switching
• Industrial power sequencing and interlock circuits
• Pulse generation and duty-cycle experiments
• Arduino / microcontroller peripheral trigger delays

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Further Reading

For guidance on electrical safety when working with relay modules and high-voltage circuits, visit the OSHA Electrical Safety resource.

Frequently Asked Questions

Q: What voltage should I use to power the NE555 delay timer relay module?

A: The module supports both DC 5V and DC 12V input. Use 5V for microcontroller-based or USB-powered setups, and 12V for automotive or standard lab-bench applications.

Q: Can I increase the delay time beyond 10 seconds on this relay timer module?

A: Yes! You can extend the delay range by increasing the resistance of the onboard potentiometer or by replacing capacitor C1 with a higher-value capacitor. The delay is calculated using the formula T = 1.1RC, so larger R or C values directly produce longer delays.

Q: What maximum load can the relay on this NE555 timer module handle?

A: The relay is rated for up to AC 220V at 10A, giving a maximum controllable load of 2000W. Always ensure your connected device does not exceed these ratings, and observe proper electrical safety precautions.

Q: Is this module suitable for use in a car dashcam or driving recorder circuit?

A: Absolutely. At 12V DC operation, the NE555 delay timer module is an ideal solution for adding a power-on delay to your car dashcam or driving recorder, protecting it from voltage spikes at engine start and ensuring it powers up at the right moment.