Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake Default Title

NE555 DC 12V Adjustable Time Delay Relay Module 0–10 Seconds

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$9.28 $11.13
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Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake Default Title
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake Default Title
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake Default Title
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
  • Timer Switch Adjustable NE555 Module Time Delay Relay Module DC 12V Delay Relay Shield 0~10S Quake
NE555 DC 12V Adjustable Time Delay Relay Module 0–10 Seconds

NE555 DC 12V Adjustable Time Delay Relay Module 0–10 Seconds

$9.28 $11.13
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NE555 Adjustable Time Delay Relay Module – DC 12V, 0–10 Seconds

Take precise control of your electronics with this compact NE555 Timer Switch Module. Designed for makers, hobbyists, and engineers alike, this DC 12V time delay relay board lets you set a customizable delay of 0 to 10 seconds before the relay engages — perfect for sequencing startup, protecting onboard equipment, or managing power switching in your projects.

Key Specifications

  • Main Chip: NE555 timer IC
  • Working Voltage: DC 12V
  • Delay Range: 0 – 10 seconds (adjustable via onboard potentiometer)
  • Board Size: 6.8 cm × 2.1 cm
  • Relay Load Rating: AC 220V / 10A (max control load: 2000W)
  • Relay Output States: Normally Open (NO) & Normally Closed (NC) contacts
  • Delay Formula: T = 1.1 × R × C (e.g., 100kΩ × 100µF ≈ 11 seconds)

Features & Benefits

  • ⏱ Adjustable delay time – simply turn the onboard potentiometer to set your desired delay (0–10 seconds)
  • 🔧 Extendable delay – swap or add a larger capacitor (C1) to extend delay time beyond 10 seconds using the T = 1.1RC formula
  • 💡 Power indicator LED – instantly shows when the module is receiving power
  • 🔴 Relay status indicator LED – visual confirmation of relay engagement
  • 🛡 Relay protection circuit – built-in protection for reliable and safe switching
  • 🚗 In-vehicle use – delays power to onboard accessories, preventing inrush current from damaging equipment when connected to a car power outlet
  • 🔌 Sequential start-up – stage the startup of multiple devices to avoid simultaneous high-current draw

How It Works

When DC 12V power is applied to the module, the relay does not engage immediately. Instead, it waits for the programmed delay period (1–10 seconds, adjustable). During this delay:

  • Normally Open (NO) contact remains open
  • Normally Closed (NC) contact remains closed

Once the delay elapses, the relay engages and the output states flip. As long as power is continuously supplied, the relay stays engaged.

Typical Applications

  • Protecting automotive accessories from inrush current at startup
  • Staggered power sequencing for multi-device electronics projects
  • DIY home automation and time-controlled switching circuits
  • Arduino / Raspberry Pi accessory control with delayed activation
  • Industrial and hobbyist prototyping boards

Made in China.

Learn more: OSHA on personal protective equipment

Frequently Asked Questions

Q: How do I adjust the delay time on the NE555 timer relay module?

A: The onboard potentiometer controls the delay time. Turning it clockwise increases the delay (up to ~10 seconds), while turning it counter-clockwise decreases it. For delays longer than 10 seconds, you can replace or add a larger capacitor in the C1 position using the formula T = 1.1 × R × C to calculate your target delay.

Q: What load can the NE555 DC 12V delay relay module control?

A: The relay is rated for AC 220V at up to 10 amps, allowing it to switch loads up to 2000 watts. Always ensure your connected device does not exceed these ratings to maintain safe and reliable operation.

Q: Can this time delay relay module be used in automotive / in-vehicle applications?

A: Yes. One of its primary use cases is protecting in-vehicle accessories by introducing a short delay before power is delivered, which prevents high inrush current from damaging sensitive onboard equipment connected to a car power outlet.

Q: What is the difference between the Normally Open (NO) and Normally Closed (NC) relay outputs?

A: Before the delay period completes, the NO contact is open (no current flows) and the NC contact is closed (current flows). After the delay, these states reverse — NO closes and NC opens. This gives you flexibility to use the module for both "delayed on" and "delayed off" switching scenarios in your circuit.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

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