The 801S Ultra-Sensitive Vibration Sensor Module is a high-precision analog and digital detector designed to sense even the most minute mechanical shocks. At Electrapac, we recommend this gold-plated sensor for advanced security systems, industrial machinery monitoring, and structural health prototypes in Bangladesh where standard vibration switches are not sensitive enough.

Unlike basic spring-based switches, the 801S features a gold-plated sensing element that offers extremely low contact resistance and high reliability. It can detect vibrations from any direction ($360\text{°}$) and provides both a Digital Output (D0) for simple "Yes/No" trigger events and an Analog Output (A0) for measuring the actual intensity or magnitude of the vibration. 

Key Features for Electrapac Customers

• Ultra-High Sensitivity: Capable of detecting microscopic vibrations, such as a light touch on a table or the humming of a distant motor.

• Gold-Plated Longevity: The gold plating prevents oxidation of the internal contacts, ensuring the sensor remains accurate for years in humid environments.

• Dual-Signal Output: * Digital (D0): Sends a HIGH signal to your Arduino when a vibration exceeds your set limit.

  • Analog (A0): Sends a varying voltage (0V to 5V) allowing you to graph the "strength" of the shock.

• Adjustable Threshold: Features a multi-turn potentiometer to fine-tune exactly how much vibration is needed to trigger the digital alarm.

• Wide Operating Range: Operates flawlessly between 3V and 5V, making it compatible with both Arduino (5V) and Raspberry Pi/ESP32 (3.3V).

To get the most out of your Electrapac 801S module, follow this simple setup:

1. VCC: Connect to 3.3V or 5V.

2. GND: Connect to Ground.

3. D0 (Digital): Connect to a Digital Pin (e.g., D3) for simple alarm triggers.

4. A0 (Analog): Connect to an Analog Pin (e.g., A0) if you want to measure the "Force" of the vibration.

5. Calibration: Keep the module perfectly still. Rotate the blue potentiometer until the signal LED just turns off. Now, a tiny tap on the sensor should make the LED flicker.

Pro-Tip: Because this sensor is "Ultra-Sensitive," we recommend mounting it with double-sided foam tape or a rubber spacer if you want to reduce "false alarms" from background environmental noise.

• Micro-Vibration Alarms: High-end security for jewelry boxes, safes, or glass windows.

• Machine Health Monitoring: Detecting if a motor or industrial pump is vibrating abnormally (a sign of bearing failure).

• Earthquake Detection: Building sensitive seismic loggers to track minor ground movements.

• Structural Monitoring: Testing the stability of bridges or building models in engineering lab projects.

• Smart Lighting: Turning on a lamp or display only when someone taps the furniture it is sitting on.

We source the 801S Gold-Plated Version to ensure our customers get the highest possible signal-to-noise ratio for their precision projects. Visit us at www.electrapac.com for the sensing components that detect what others miss.