Video: How to make extremely simple anti-theft alarm bell
No need to invest money to buy expensive Door Alarm burglar alarms, you can make at home with familiar materials.
No need to invest money to buy expensive Door Alarm burglar alarms, you can make at home with familiar materials such as clothes clamps, primary batteries, electric wires, drills, shotguns glue…
Simple, cheap burglar alarms.
- Video: How to make a high speed mini drill
- Video: Instructions for making trucks with removable cardboard
- Video: How to make mini water pumps at home
- Video: How to make a plane straight up SU-27 Sukhoi
- Video: How to make trucks from Coca cans
Update 15 December 2018
More Science Stories
- The meaning behind the custom rings the bell to welcome the New Year's Eve
- Alarm clock with scent
- 'Smart cloth' - the new generation anti-theft system
- The truth that you didn't expect about the color of bell peppers
- 7 anti-theft tips 'visit' home
- Patent student of vibration alarm
- Homemade alarm device simple
- Alarm clock history
- How to detect and prevent others from using wifi theft
- Video: The world's most rude alarm clock
Related Stories
Why does steam cause burns worse than boiling water? Lightning-fast octopus is amazing Video: The secret to quickly fold clothes in just 2 seconds for busy people The eel waving off his head still bites the can of water Video: The baby comes out of the womb Video: Stunned with a tree with fruit ... naked girl Video: Astronaut playing table tennis in the universe Unbelievable romance of the 'seabed monster': Wolf eel