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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
DIY – Earthquake Alarm Kit – Tested & Verified (Educational projects and learning DIY kit)

DIY – Earthquake Alarm Kit – Tested & Verified (Educational projects and learning DIY kit)

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ComponentSpecification
Detection TypeMechanical Vibration (Pendulum)
Alert TypeHigh-Pitch Buzzer & LED Light Indicator
Power Source9V Hi-Watt Battery (Included with Connector)
Frame MaterialDurable ABS Plastic / Sturdy Vertical Stand
ConnectivityPre-Wired Components for Easy Assembly
Learning OutcomeUnderstanding Seismology & Simple Circuits
Price
₹ 220.34 ₹ 220.34
(Tax included)

Product Description The DIY Earthquake Alarm Kit is a "tested and verified" educational tool that allows students to build their own early-warning vibration detector. By constructing a simple pendulum-based circuit, users learn how physical vibrations can close an electrical loop to trigger an alarm. This kit is perfect for school science exhibitions, teaching the principles of inertia, gravity, and electrical conductivity in a fun, hands-on way.

Key Features

  • Instant Detection: Features a sensitive pendulum mechanism that triggers the buzzer the moment the ground (or table) shakes.

  • Visual & Audio Feedback: Combines a bright LED with a loud buzzer to ensure the "earthquake" alert is both seen and heard.

  • Easy Assembly: Uses a nut-and-bolt system and pre-wired components, making it accessible for children with no prior electronics experience.

  • Adjustable Sensitivity: By changing the height of the pendulum or the position of the metal clip, students can calibrate the device to detect different levels of vibration.

  • Robust Design: Built on a stable cross-base to prevent tipping during testing, ensuring reliable results during school presentations.

Technical Details

  • Working Principle: A weighted metal wire (pendulum) hangs inside a metal loop. When vibration occurs, the wire swings and touches the loop, completing the circuit between the battery and the buzzer.

  • Calibration: Includes washers to adjust the metal clip's height for precise detection.

  • Portability: Battery-operated design allows the project to be demonstrated anywhere without needing a wall outlet.

Prototyping and Engineering Tips from Robogears

  • Sensitivity Tuning: For a more sensitive alarm, shorten the distance between the hanging weight and the metal clip. For a "major quake" only alarm, increase the gap so it requires a larger swing to make contact.

  • Clean Contacts: If the alarm doesn't trigger when the wire touches the clip, use a small piece of sandpaper to lightly clean the metal surfaces. Sometimes a thin layer of oxidation can act as an insulator.

  • Stability Tip: Glue or tape the cross-base to a piece of heavy cardboard or a wooden board. This prevents the entire device from sliding, ensuring only the pendulum moves when you shake the base.

  • Seismograph Upgrade: Advanced students can try attaching a small pen to the pendulum and dragging a piece of paper underneath to turn this alarm into a basic seismograph.

Package Includes

  • 1 x Main Vertical Pillar and Cross-Base

  • 1 x High-Pitch Buzzer

  • 1 x LED Indicator Light

  • 1 x 9V Hi-Watt Battery & Snapper

  • 1 x Metal Pendulum Weight & Wire

  • 1 x Adjustable Metal Contact Clip

  • 1 x Complete Hardware Set (Screws, Nuts, Washers)

Disclaimer Images are for reference; actual colors or packaging may vary slightly. CHOKING HAZARD: Contains small parts; not suitable for children under 3 years. This is an educational model and not a life-saving device for real seismic events.