W-2: This is your most important form. Youâll need one from each employer you worked for over the past year. A W-2 shows the amount of money you earned, the amount withheld for income taxes and Social Security and Medicare taxes, and any contributions you made to a retirement plan, medical accounts, or child care reimbursement plan.
IR wireless (infrared wireless) IR wireless is the use of wireless technology in devices or systems that convey data through infrared (IR) radiation. Infrared is electromagnetic energy at a wavelength or wavelengths somewhat longer than those of red light. The shortest-wavelength IR borders visiblered in the electromagnetic radiation spectrum;the longest-wavelength IR borders radio waves.
A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.Motion detectors form a vital component of security, automated lighting control, home control, energy efficiency, and other useful systems.o energy is emitted from the sensor, thus the name passive infrared (PIR). This distinguishes it from the electric eye for instance (not usually considered a motion detector), in which the crossing of a person or vehicle interrupts a visible or infrared beam.