Mosquitos don’t just whine in your ear and drive you mad with itching, but they also spread disease to more than 700 million people every year. Mosquitoes are attracted to carbon dioxide as well as the warmth and humidity you’re giving off. There are many different types of mosquito repellent. From zappers to catchers to →
4-Port USB KVM Switch DKVM-4U is a device that allows you to control up to 4 PCs using only one monitor, keyboard and mouse. The DKVM-4U is designed to allow you to control up to 4 computers from a single keyboard, monitor and mouse, so you don’t have to purchase a monitor, keyboard and mouse →
MT87 Digital Clamp Meter is the cheapest digital clamp multimeter I have found. It has been sold at price for less than 10 Euros/Dollars, while some other places sell the same mater often at around 20-30 Euros price. Main Features: ● Mini and compact design, easy to hold ● Data hold and LCD display, easy →
Many of us are unknowingly exposed to some level radioactive radiation every day. There is always some background radiation. Even some common household items can be a source of radiation. Radiation meters allow you to know the amount of radiation on your environment. Typically this type of meters are used for letting you know if →
This is an accidential teardown, because the LED power supply case opened accidentially (did not need very strong hit to open up). Closer look at circuit board →
Cheap usb cable with light effect did not work reliably anymore (short service life cheap Chinese crap) so it is teardown time. Let’s open Inside I see three LEDs and plastic fiber optic cables connected to those LEDs. Those fiber optic cables are here not for fast data transfer fiber optic is usually known for. →
Millenium DI-E is a DI Box. It is pretty much the cheapest (around 12 Euros) DI box you can find that still does it’s job acceptably. The unit is passive and has ground and ground lift. IT allows you to select to use the input with either an instrument or speaker level signal. Here is →
Here is tear-down view of the following USB charger: SilverCrest SPBS 5000 B2 Battery: 3.7V 5000 mAh 18.5Wh Input: 5V 2100 mA Output: 5V 2100 mA Manufactured 2018-10 It was sold by LIDL. This device has a built-in battery that can be charged with other USB charger or with built-in solar panel. Here is a →
STEGO KTO 011 is electromechanical thermostat designed for controlling electrical heating. The thermostat has one NC (normally closed) contact that normally conducts, but opens when temperature exceed the set temperature. The temperature control range is 32-140F. The electrical NC contact is rated for AC120V 16(2)A and AC250V 10(2)A. Let’s open the device. The temperature controlling →
Here is teardown of Stego FZK 011 thermostat. Thar is an electronechanical thermostat that can control heating resistor and/or cooling fan. The thermostat is based on bimetal strip that bends based on temperature. To get sharp transition and some hysteresis there is also magnet near silver calibration adjustment screw and electrical contacts. Components on board →