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Product Description
Description:
4 in 1 Puzzles Scientific Experiment Educational Toy Kids Toy Electric Projects Engineering Set Gifts for Boys and Girls
Feature:
1. Simple Assembly: The wooden building kits is now inlaid and the appropriate round bars are inserted into the corresponding holes. Carpentry glue and other tools are needed. It is more convenient to assemble.
2. Cultivate Creativity & Imagination: Electric projects engineering set let kisd understand that traffic lights are applications of parallel circuits. 
The red light stops, the green light goes, and the zebra crossing is safe.
3. Unique Design: The wooden building kits is designed to make children recognize electronic components and understand their applications Exposure to simple circuits.
4. Best Gift: Electric projects engineering set comes with all of the parts you need to build, perfect gift for age 4 years old and up girls and boys.
5. Satisfaction Guarantee: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any issues, inquiries or need assistance, please feel free to contact us directly.

 

Specification:
Material: wooden
Function: Intelligence Development
Remarks:No Battery.Please bring your own battery.
Size: approx.8*10.5cm/3.15x4.13 in
Suitable age: 4 years old and above
Contains: wood + battery box + electronic components + red, yellow, green LED lights

Assembly tips:
The blue line on the diode is the positive pole of the LED lamp, and the red line is the negative pole.
The voltages of the red and yellow diodes actually only require 1.8-2.2V, so a series resistor is needed.
Finite pressure action of electric resistance , so the diode will not be burned when long time use.

Know how:
1. Understand some basic traffic knowledge, know the reason why red light stops and green light goes.

2. Be aware of your own safety when you cross the road.

Experiment for:
Understand that traffic lights are applications of parallel circuits. 
The red light stops, the green light goes, and the zebra crossing is safe. 
Did you think about the traffic light on the road every time you heard this song? But do you know why the traffic light will be green for a while? 
After learning this section of the experiment, you may understand the mystery
The purpose of the experiment:

To understand electronic components and understand their applications, learn some simple circuits.

Note:

1.Please allow 1-3 cm differs due to  manual measurement.
2.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.

Included:
1 X DIY Traffic Light
pictures
payment
  1. We accept PayPal only.

  2. All major credit cards are accepted through secure payment processor PayPal.

  3. Payment must be received within 7 business days of auction closing.

  4. If you have bought multiple items from me, you can send me one payment for all the items instead of paying for them individually. When you click the Pay Now button, eBay will automatically determine if there are other items you have won or purchased from me and will combine them for your review.

  5. NOTE: Import duties, taxes and chargers are not included in the item price or shipping charges. These charges are the buyer's responsibility.
    Please check with your country's customs office to determine what these additional costs will be prior to bidding buying.

Warranty
  1. 12 months Warranty. Buy with confidence!

  2. If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back. Please contact me before you return it.

  3. If item is defective in 3 months, We will send you a replacement without extra charger, or offer refund after we receive the defective item.

  4. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping fee.

policies
  1. We are not responsible for any custom duty or import tax.

  2. We will leave POSITIVE FEEDBACK after receiving the payment. Please contact us if you are not satisfied with the item after receive it.

  3. All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible.

  4. Serious Buyer Only! Please place bid only if you agree with all the terms.

  5. If you have any problems or concerns whatever with your order or products, please message us and give us a chance to assist you before you leave any feedback.
    We believe we can produce a positive outcome to any situation and will work hard to earn your praise.
    If you were pleased with this transaction, Please give us 5 star rating, thanks!

Shipping
  1. We Ship to Worldwide.

  2. Items will be shipped within 2 business day on payment received.

  3. Item are shipped from shenzhen using Airmail, reach most of the countries within 10 to 20.

  4. Delivery time depends on destination and other factors, it may takes up to 20 business days.


Contact Us
  1. Our office hours are 9:00 a.m to 6:00 p.m (GMT +8) of Monday to Saturday.
    And our Office is closed on Sunday and public holidays.
    We apologize for the late reply during the holidays.

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