DC 12V Relay Switch Module – DIY Alarm System with Adjustable Vibration Sensor

Build smarter, more responsive DIY electronics projects with this compact DC 12V Relay Switch Module. Featuring an adjustable vibration sensor and configurable time-delay trigger, this versatile board is ideal for hobbyists, makers, and engineers looking to add intelligent switching and motion-triggered alerts to their custom alarm systems, automation circuits, and security builds.

Key Features

Adjustable Sensitivity: Fine-tune the vibration detection threshold to suit your specific application — from subtle movement detection to heavy-impact triggering.
Configurable Time Delay: Set the relay hold time to match your project's requirements, giving you full control over trigger duration.
High-Touch Sensitivity: Engineered for reliable, instant response the moment vibration is detected.
Compact Form Factor: Measures just 55 × 25 × 16 mm (2.17 × 0.98 × 0.63 in), making it easy to integrate into tight enclosures or custom housings.
DC 12V Operation: Runs on standard 12V DC power — compatible with a wide range of DIY electronics setups.
Relay Output: Drives external devices or circuits via the onboard relay switch — connect alarms, buzzers, lights, or other loads directly.
Ready to Use: No complex setup required; connect power, adjust sensitivity, and your module is ready to go.

Specifications

Operating Voltage: DC 12V
Dimensions: 55 × 25 × 16 mm / 2.17 × 0.98 × 0.63 in
Sensor Type: Vibration / Impact Sensor
Adjustable Parameters: Sensitivity & Time Delay
Output: Relay Switch

Perfect For

DIY home alarm and security systems
Vibration-triggered lighting or buzzer circuits
Automation and smart home electronics projects
Maker space and electronics classroom builds
Anti-theft vehicle or equipment monitoring setups

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Frequently Asked Questions

Q: What does the DC 12V Relay Switch Module with Vibration Sensor do?

A: This relay switch module detects vibration or impact through its onboard sensor and triggers a relay output based on your configured sensitivity and time-delay settings. It's ideal for DIY alarm systems, security circuits, automation builds, and any project that requires a motion or vibration-triggered switching action at DC 12V.

Q: How do I adjust the sensitivity and time delay on this relay module?

A: The module features onboard adjustment controls (typically potentiometers) that let you dial in the vibration detection sensitivity and the relay hold duration. Simply power the module at DC 12V, use a small screwdriver to turn the adjustment controls, and test until your desired response is achieved.

Q: What can I connect to the relay output of this module?

A: The relay output can be used to switch external devices such as buzzers, alarms, LEDs, sirens, or other loads within the relay's rated capacity. It acts as a standard normally-open/normally-closed relay switch, making it compatible with a wide variety of DIY electronics and automation applications.

Q: Is this module suitable for beginners in electronics?

A: Yes — the module is designed to be plug-and-play at the basic level. Connect DC 12V power, attach your output device to the relay terminals, and adjust the onboard controls. No advanced programming is required, making it accessible for hobbyists and makers at all skill levels.

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.