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Technical Support

  • What is LUMEN?
    The lumen (symbol: lm) is the Sl derived unit of luminous flux, a measure of the total "amount" of visible light emitted by a source. Luminous flux differs from power (radiant flux) in that luminous flux measurements reflec the varying sensitivity of the human eye to different wavelengths of light, while radiant flux measurements indicate the total power of all electromagnetic waves emitted, independent of the eye's ability to perceive it. Lumens are related to lux in that one lux is one lumen per square meter.

    The total lights that measured in all directions.
  • Drop Test
    Free-falling from 0.9m height to concrete ground at room temperature. No damage to the functionality and operation of the product. 3 drops by random angles of the product.
  • What is LUX ?
    The lux ( symbol: lx ) is the Sl unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter. ln photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. lt is analogous to the radiometric unit watts per square meter. but with the power at each wavelength weighted according to the luminosity function, a standardized model of human visual brightness perception.

    The maximum brightness that measured at a certain surface
  • Cold Weather Test
    Remain fully functional after stored under the condition of -20℃ for a period of 24 hours. The minimum output remains 30% of normal condition.
  • Beam Angle
    The most effective illuminating angle of the light source.

    Light type Beam Angle
  • Over Charge Protection
    Automatically cut off when the battery voltage reaches preset data, in order to extend battery life and prevent the housing from overheating and even causing fire and/or explosion.

    Battery Cutoff Voltage Temperature
    Ni-MH 4.5V ≤60°
    Li-ion 4.2V <60°
  • Impact Test
    The most vulnerable surface of the product shall withstand impact. The impact force is delivered by a 23.7mm / 0.55 kg steel ball that free-falling from 0.3m high. 3 drops shall be randomly applied to product surface.
  • Over Discharge Protection
    Automatically cut off when the battery voltage reaches preset data, in order to extend battery life.

    Battery Cutoff Voltage
    NI-MH 2.75V
    Li-ion 2.75V