Mainly depends on the purpose. Traditional aluminum profiles are made of LED strips, which can be used for edge lighting of jewelry counters or furniture and freezers. Its aluminum profile is relatively simple and single, and LED line lights are mainly used for commercial lighting and indoor decoration lighting. Its aluminum profile is generally assembled and matched by several complex aluminum profile kits, which are hung on the ceiling and embedded in the ceiling and wall, and the appearance will be more beautiful.

The measured working current is the most accurate. The product of working voltage and current is its power.

Different manufacturers 12V modules have different LED models, so the If will be different, and the actual working current may be quite different. Conventional estimation method: the current of low-power LED is 20mA, and Vf is about 3.2V, that is, after three LEDs in the module are connected in series, the current is limited by resistors, and 30LEDs are 10 groups. The total current is about 200mA(0.2A) and the power is 65440.

Light-emitting diode is called led for short. Made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc. When electrons recombine with holes, they can emit visible light, so they can be used to make light-emitting diodes. Used as an indicator light in circuits and instruments, or as a text or digital display. Gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light and gallium nitride diodes emit blue light. Because of its chemical properties, it can be divided into organic light-emitting diode and inorganic light-emitting diode LED.

QTW module refers to the device that can realize linear motion in the field of automation industry, also known as positioning module. Linear module can be regarded as a knowledge product used by mechanical engineers through the transformation and development of machinery, sharing experience and exchanging knowledge with each other.