Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•Simple, safe and quick to operate
•Compact apparatus with integrated photocell as well as a voltmeter and nano ammeter
•For determining Planck’s constant and the work done in emitting an electron using the stopping potential method
•Five light emitting diodes of known mean wavelengths act as light sources of differing frequencies
•The intensity of the light emitted by them can be varied from 0 to 100 percent
