This kit has a small set of parts and is assembled by hinged mounting on a connection block. If you want, you can make a printed circuit board yourself, for some reason the Chinese decided not to make it, probably because the circuit is very simple, but at the same time very interesting and necessary in the household.
The kit comes with the following set of parts:
- Boxes for batteries - 2 pieces
- Laser head with wires
- Photoresistor in the housing
- Transistor - 1 piece
- Trimmer Resistor
- Speaker
- Connection block
- Instructions in Chinese with pictures
Video for those who do not like to read:
Laser Alarm Assembly
Following the instructions presented, we collect all the details on the block.
First, insert the batteries into the box and connect the laser, the main thing is not to confuse the polarity, otherwise it can go out of standing, check it and proceed to assemble the receiver. There is no mount for the laser, but it is not necessary, since it should be free, so that it would be easy to install it in the place of protection.
We collect all the parts on the block according to the instructions, you don’t need to solder anything, since they are all fastened with bolts. We connect the box with pre-inserted batteries. A trimmer adjusts the volume of the emitted signal, which sounds loud enough.
The result was a very simple but interesting alarm.
That's all, I advise you to buy this kit, especially since it is not expensive!