Hello World, this is a test. ×

Dear Customer, If you wish to purchase more than 5 copies or in bulk, please contact our bulk purchase department at [email protected]



Please enter your login details


Forgot Password?

It happens, just reset it in a minute

Sorry, incorrect details. ×
Welcome back pal! ×



Please enter your User Name, email ID
and a password to register

No CVV Stored

Our website will not store CVV of your card.

Safe & Secure

Our website is secured by 256 bit SSL encryption issued by Verisign Inc, making your shopping at Sapnaonline as secure as possible.

International Shipping

at best shipping prices!

If you need any of your orders' to be delivered outside of India, please reach out to us via our contact us page with the product details and delivery location for us to quote you the best possible shipping price. You can also drop in a mail at [email protected]

Notify Me

We will send an email as soon as we get it in stock.

Write a Testimonial

Few good words, go a long way, thanks!


Personalize Gift card

We will send an email to receiver for gift card.


Track Order

Enter Order ID & Email Address to track your Order.

Check Your Sapna Gift Card Balance

(Card can be redeemed only at Sapna Retail Outlets)

Reminder: Free shipping if your order is above `199
Notification Alert
We offer free shipping for all orders above `199. To avail this offer, add another item of `0 or more from our wide range of quality books available at SapnaOnline.com

Reset Pincode

Submit a Review

Sorry, incorrect details. ×
Automatic Voice Activated Switch
Review Rating

(Click on below image to change)

Automatic Voice Activated Switch

(Click on image to Zoom)

Automatic Voice Activated Switch

Published by Adormi | Language - English | Binding - Electronic Kit

Average Rating

` 795 (18% off) ` 649

+ The price is inclusive of GST.
+ Free Shipping (for orders above `199).

Sorry, out of stock.
Check Delivery
  • Availability - Out of Stock
  • International Shipping available.
  • 100% Genuine guarantee.



  • Sound Enabled Control Switch to Turn On or Off an Appliance.
  • Includes Sound Activated Sensitivity Adjustable Switch.
  • Turn On or Off Time Adjustable upto 60secs.
  • Supports Loads of upto 3A-115V or 5A-12V.

Kit Contents:

  • Electronic Components:
    • Microphone
    • 12V Relay
    • Op-amp IC LM324
    • Printed Circuit Board, 9V Battery and All Other Required Components
  • Pictorial Step-by-Step Guide
  • Interactive Classroom Circuit Theory
  • Instructional Videos with Testing and Troubleshooting Guide
  • Home Automation Industry Market Analysis
  • Career and Job Prospects in Home Automation Industry
  • Unique Adormi Certification with Online Evaluation

Learning Objectives:

  • Understand Core Concepts:
    • Sound Sensing
    • Electromechanical Relay
  • Learn Technology Fundamentals:
    • Microphone
    • Op-amp
    • Comparator
    • Voltage Regulator
  • Recommended Courses:
    • Analog Electronics
    • Designing with Linear Circuits
    • Electromagnetic Waves
    • Basic Sensor Technology

Additional Applications:

  • Voice Activated IR Remote Control
  • Voice Controlled Robot
  • Voice Activated  Secure Access System


Book: Automatic Voice Activated Switch
ISBN-13: 1234567000195
Product Code AT2H1B36
Binding: Electronic Kit
Publisher: Adormi
Language: English

Customer Reviews

Loading reviews. Please wait...
Pick Of The Day