Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
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Description
4M KidzLabs Build an Intruder Alarm Circuits STEM Kit for Age 8 and UpThe KidzLabs Intruder Alarm will be the perfect kit for science minded kids! Learn the science behind building an electric circuit and build your own kick wire door alarm with this kit. Install it in your bedroom and stop those unwanted intruders breaking in! Contents: Contains alarm platform, alarm cover, battery holder with cover, buzzer with wires installed, trigger plate holder, wall mount, connection plate (with metal plates installed), trigger
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- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 2306 reviews
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Product Reviews
★★★★★ 5
The ideal fetch ball
Our dog is obsessed with these. They bounce well, they’re squishy enough to meet his chewing needs but strong enough to not get destroyed. We do replace them every 8-10 months because after 2-3 20 min fetch sessions almost everyday they do rip. They have a nice weight to them so they’re easy to hurl 20-30 yards.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Awesome product!
Love it! It really glows bright! We have a German Shepherd.
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Reviewed in the United States on March 6, 2026
★★★★★ 5
The best for fetching enthusiasts
We have two lab mix dogs that love to play fetch but also have very strong jaws and sharp teeth. Tennis balls last about 10 seconds. I have used these for several years now and they are the best. They glow in the dark for night fetching, have two holes and are hollow so they whistle when you throw them. The dogs chew them like gum when not fetching and they hold up. They last about a year before starting to tear (this is with almost daily use). These balls are their favorites and get they upset if I use something else.
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Reviewed in the United States on August 31, 2024
★★★★★ 4
Glows
Tough but not very solid you know things is and squishy. Glows
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Reviewed in the United States on October 12, 2025
★★★★★ 5
Great product!
That my dog loves these ballls. Great for evening play time when the days are shorter. Plus he doesn't destroy the balls.
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Reviewed in the United States on September 26, 2025
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