Many modern motion detectors use a combination of different technologies. While combining multiple sensing technologies into one detector can help reduce false triggering, it does so at the expense of reduced detection probabilities and increased vulnerability.
For example, many dual-tech sensors combine both a PIR sensor and a microwave sensor into one unit. In order for motion to be detected, both sensors must trip together. This lowers the probability of a false alarm since heat and light changes may trip the PIR but not the microwave, or trees may trigger the microwave but not the PIR.
From toys to digital cameras to remote controls and many more, batteries provide all the power you need for the devices you use every day. Clear symbols help you to easily find the right battery for your device.
People around the world use different kind of wall sockets and wall plugs. Wall sockets and wall plugs used in America are different from ones used in England, and ones used in England are different from ones used in Europe. Travel adapters enable us to use our devices virtually everywhere on the planet.
Rechargeable battery is a electrical device for storing electrical energy in an indirect way via chemical energy and a source of direct current. The most famous is the lead battery.
Today, the batteries are required in all major technical systems, transport, signaling, security, modern computers, telecommunications systems and watches and calculators. There are many types of batteries used for various purposes. Li-ion - lithium ion, Lipo - lithium ion polymer, SLA - sealed lead acid
- Electrical cables
- Electrical cords with different plugs
- Extension cords with or without switch and with different number of output sockets
Electrical measuring instruments are used for measuring various physical quantities. The most commonly used instruments are digital multimeters, but also included in this group there are for example electric energy meters, which are a simple way for people to calculate their electricity bill, or electrical consumption of different kitchen appliances, which are in many ways more practical and direct instruments. Instruments are suitable for profesional and home use.
A time switch, also called a timer switch, or simply timer is a timer that operates an electric switch controlled by the timing mechanism.
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