DC 12V/24V Delay Power-Off Relay Switch Module NC/COM/NO
1-Channel DC 12V/24V Adjustable Delay Power-Off Relay Switch Module
Take precise control of your vehicle's or home's electrical circuits with this compact, easy-to-install DC 12V/24V Adjustable Delay Power-Off Relay Switch Module. Featuring a 0–30 second adjustable timing range and three contact types (NC, COM, NO), this relay module delivers stable, reliable time-delay circuit control for automotive, smart home, and industrial applications.
Key Features
- Wide Voltage Compatibility: Works with both DC 12V and DC 24V systems, making it versatile for automotive and household electrical setups.
- Adjustable 0–30 Second Delay: Easily configure the power-off delay interval to suit your specific circuit control needs.
- Three Contact Types – NC, COM, NO: Supports normally closed, common, and normally open configurations for maximum wiring flexibility.
- Extends Battery Life: Intelligently manages power distribution when the vehicle is started, helping reduce unnecessary battery drain.
- Overcurrent & Short-Circuit Protection: Automatically cuts power in the event of a sudden electrical fault, helping protect your system from damage.
- Protective Shell Included: Comes with a durable plastic protective enclosure to safeguard the circuit board during installation and use.
- Professionally Tested: Every unit undergoes quality testing to ensure consistent, dependable performance right out of the box.
- Compact & Lightweight: Moderate size makes installation straightforward in tight automotive or panel spaces.
Specifications
| Input Voltage | DC 12V / 24V |
| Delay Range | 0–30 Seconds (Adjustable) |
| Contacts | NC, COM, NO (3-contact relay) |
| Material | Plastic + Metal |
| Channels | 1 Channel |
| Package Contents | 1 × Delay Circuit Board + 1 × Protective Shell |
Applications
- Automotive electrical systems – delay ignition, accessory cut-off, and battery management
- Smart home lighting and automation control
- Industrial equipment motor delay start
- Alarm and security system delay triggers
- Any electrical circuit requiring accurate time-delay control
Made in Mainland China.
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Frequently Asked Questions
Q: What voltage does this delay relay module support?
A: This relay switch module supports both DC 12V and DC 24V input, making it compatible with most standard automotive and low-voltage industrial electrical systems.
Q: How do I set the delay time on this relay module?
A: The delay time is fully adjustable from 0 to 30 seconds via an onboard potentiometer. Simply turn the adjustment dial to set your desired power-off delay interval before installation.
Q: What is the difference between the NC, COM, and NO contacts?
A: NC (Normally Closed) means the circuit is closed when the relay is at rest and opens when triggered. NO (Normally Open) means the circuit is open at rest and closes when triggered. COM is the common terminal shared by both. This gives you flexibility to wire the relay for either activation or deactivation scenarios.
Q: Is this relay module suitable for smart home automation projects?
A: Yes! While designed with automotive use in mind, this DC 12V/24V delay relay switch module is equally effective for smart home lighting control, motor delay start systems, alarm triggers, and other household or industrial time-delay circuit applications.
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.