Solar radiation instruments measure the spectral range of radiation, including global solar radiation (sun + sky), net radiation (incoming solar - reflected solar) and the photosynthetic light spectrum

Battery and fuel cell test equipment consists of specialized test stations, stands or systems, monitors and component modules for performance or endurance testing. 

Photovoltaic cells generate a voltage when radiant energy falls on the boundary between dissimilar substances

Solar simulators and light sources produce a simulated solar spectrum for plant growth, material-degradation simulations, weathering tests for coatings, photovoltaic (PV) cell testing, sunblock evaluations, and window transmission studies

PV and solar power systems convert light into electricity. They are the building blocks of photovoltaic (PV) modules

Semiconductors (metalloids) or semiconductor materials are used to fabricate microelectronic and optoelectronic devices such as transistors, photodetectors or solar cells

UV light systems provide ultraviolet light for identification, tracing, curing, disinfection or processing applications.

Load cells are transducers for force and load measurement, often with mounting packaging.  They are widely used in testing, instrumentation, and as components in larger devices such as scales

Weather instruments are designed to measure one or multiple components of weather including wind speed and direction, rain or snow fall, solar radiation, temperature, pressure and humidity

Nanotechnology materials and nanotechnology products have features or particle sizes in the range of 1 to 100 nm.

Fuel cells produce electricity and heat electrochemically by combining oxygen from the air with a fuel, preferably hydrogen, from methanol, natural gas, or petroleum. Reformers are often used in conjunction with fuel cells

Alternative power generators produce electricity from renewable energy sources, such as wind, flowing water, solar energy and biomass, which create less environmental damage and pollution than fossil fuels

Silicon controlled rectifiers (SCR) are four-layer (PNPN) thyristors with three terminals: an input control terminal (gate), an output terminal (anode), and a terminal common to both the input and output (cathode). SCRs are used mainly with high voltages and currents, often to control alternating current (AC) where the change of sign causes the device to switch off automatically

Semiconductor metrology instruments are designed for wafer and thin film in-line inspection after semiconductor processing. They include capacitance gages, C-V systems, electron beam probes, ellipsometers, interferometers, I-V system, magnetometers, optical systems, profilometers, reflectometers, resistance probes, RHEED systems, and X-ray diffractometers.  

Telephones and cell phones convert voice or other sound signals into a form that can be transmitted to another device that receives and reconverts the waves back into sound