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Vibration Sensor - SW18020P

SKU: V84SIMJ4YS
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4.7 (124 reviews)
The Vibration Sensor – SW-18020P is a compact spring-type vibration and shake detection switch designed to detect movement, vibration, impact, and mechanical shock. The sensor contains an internal conductive spring mechanism that momentarily closes its electrical contacts when sufficient vibration or movement is detected. Under normal stationary conditions, the SW-18020P remains in an open-circuit OFF state. When vibration, shaking, impact,...
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The Vibration Sensor – SW-18020P is a compact spring-type vibration and shake detection switch designed to detect movement, vibration, impact, and mechanical shock. The sensor contains an internal conductive spring mechanism that momentarily closes its electrical contacts when sufficient vibration or movement is detected.

Under normal stationary conditions, the SW-18020P remains in an open-circuit OFF state. When vibration, shaking, impact, or movement causes the internal spring to move, the contacts briefly connect and produce an ON-state pulse. Once the movement stops, the sensor automatically returns to its normally open state. The SW-18020P is non-directional and can respond to vibration from different orientations.

The sensor features a compact sealed cylindrical package and simple 2-pin, non-polarized connection. It can be connected to microcontroller digital inputs using a pull-up or pull-down resistor and is suitable for Arduino, ESP32, STM32, Raspberry Pi, PIC, AVR, and other electronic control systems.

The SW-18020P is widely used in anti-theft alarms, vibration detection systems, smart home devices, electronic toys, sports equipment, vehicle electronics, machine movement detection, and other applications requiring simple mechanical vibration sensing.

Key Features

  • Spring-type vibration and shake sensor
  • Detects vibration, impact, shaking, and movement
  • Normally Open (NO) contact operation
  • Momentary contact closure during vibration
  • Non-directional vibration detection
  • Can respond to vibration from different mounting angles
  • Fast response time of approximately 2ms
  • Compact cylindrical construction
  • Sealed SW-18020P package
  • Simple 2-pin electrical connection
  • Non-polarized sensor terminals
  • Very high resistance in idle state
  • Low resistance during contact closure
  • Low power requirement
  • Suitable for low-current trigger circuits
  • Easy interfacing with microcontrollers
  • Suitable for alarm and security applications
  • Long mechanical operating life

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Sensor Type: Mechanical Vibration / Shake Sensor Switch
Model: SW-18020P
Detection Type: Vibration, Shock, Impact and Movement
Sensing Mechanism: Internal Conductive Spring Contact
Output Type: Momentary Contact Switching
Normal State: Open Circuit (OFF)
Triggered State: Momentary Closed Circuit (ON)
Trigger Direction: Non-Directional
Maximum Working Voltage: 12V
Maximum Switching Current: Up to 50mA on commonly specified versions
Conductive Time: Approximately 2ms
Open Circuit Resistance: Greater Than 10MΩ
Closed Contact Resistance: Less Than 10Ω on commonly specified versions
Response Type: Pulse / Intermittent Contact Output
Number of Terminals: 2
Terminal Polarity: Non-Polarized
Package Type: Sealed Cylindrical Sensor
Housing Diameter: Approximately 4.7mm
Body Length: Approximately 11mm
Total Length Including Leads: Approximately 21.5mm
Typical Weight: Approximately 0.22g
Operating Temperature: Approximately -40°C to +80°C on commonly specified versions
Mechanical Life: Up to Approximately 200,000 Operations, Depending on Operating Conditions
Mounting Type: PCB Through-Hole
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi GPIO, PIC, AVR, 8051 and other digital input circuits.

Additional Resources

Vibration Sensor.PDF

FAQ

1. What is the SW-18020P Vibration Sensor used for?

The SW-18020P is used to detect vibration, shaking, movement, impact, and mechanical shock. It is commonly used in anti-theft alarms, security systems, smart home devices, toys, vehicle electronics, and microcontroller projects.

2. How does the SW-18020P Vibration Sensor work?

The sensor contains an internal conductive spring mechanism. When vibration or movement occurs, the spring moves and briefly closes the internal electrical contacts, producing a short trigger signal.

3. Is the SW-18020P compatible with Arduino and ESP32?

Yes. The sensor can be used with Arduino, ESP32, STM32, Raspberry Pi, PIC, AVR, and other controllers. A pull-up or pull-down resistor and suitable software debouncing are commonly used for reliable detection.

4. Does the SW-18020P measure the amount of vibration?

No. The SW-18020P is primarily a vibration switch and provides contact pulses when vibration occurs. It does not provide a calibrated analog measurement of vibration amplitude, acceleration, or frequency.

5. Does the SW-18020P have positive and negative terminals?

No. The sensor is a non-polarized mechanical switch with two contact terminals. Either terminal can be connected to the signal side or ground/reference side of the detection circuit.