What's wrong with LED strips?

Hello friends! If with LED lamps everything is more or less clear and manufacturers write the main characteristics. That situation with LED strips is a rather vague situation. For example, the tapes I have do not indicate such important characteristics as the color rendition index — CRI, color temperature (there are differences) and I'm not talking about the luminous flux.

Why don't we start testing tapes?

Actually our experimental:

• Tape Smartbuy IP65-4.8W / CW art. SBL-IP65-4_8-CW 358 rub.
• Tape Smartbuy-IP65-4.8W / WW art. SBL-IP65-4_8-WW 358 rub.
• Tape SKY LARK 4,8 W / m, 12VDC, IP65, 3000K, 5 m art. SLS-012W048A6508 765 rub.
• Tape SKY LARK 4,8 W / m, 12VDC, IP65, 4200K, 5 m art. SLS-012N048A6508 765 rub.
• Tape Gauss LED 2835/60-SMD 4.8W 12V DC cool white IP66 (blister 5m) art. 311000305 962 rub
• Gauss LED 2835/60-SMD 4.8W 12V DC tape warm white IP66 (blister 5m) art. 311000105 962 rub

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Tape for the review were selected on the same power of 4.8 W / m (24 watts in the video) and a similar protection class IP65 / 66.

On the quality of the assembly to all the tapes have questions

Gauss

Collected qualitatively. The diodes are soldered exactly. On one tape there is rubbing on silicone (note the difference between the gauss lettering on the ribbons, on the upper tape it is unclear - this is the very worn one) along the entire length of the tape.

Smartbuy

Uneven edges. The tape is thin. Wires soldered crooked.

SKY LARK

On one tape on the wires a bunch of sealant. The second is not clear what is with silicone.

We proceed directly to testing.

To measure the light characteristics we will use a spectrometer-pulse meter UPRtek MF250N

Measurement options:

• Spectrum graph;
• Ripple index;
• The percentage of pulsations;
• Illumination (LUX);
• Colour temperature;
• CRI (Ra) color rendition index.

To measure the power of the tape will use a wattmeter Robiton PM2

Measurements:

• Mains voltage (V)
• The current consumed by the electrical device (A)
• AC frequency (Hz),
• Power appliance (W)
• The amount and cost of electricity consumed.

Tape Smartbuy IP65-4.8W / CW art. SBL-IP65-4_8-CW 358 rub.

Tested features:

• Power consumption - 12 watts
• Color temperature - 6100K
• CRI - 72

Ribbon output: I didn’t like low CRI for cold tape and low power.

Tape Smartbuy-IP65-4.8W / WW art. SBL-IP65-4_8-WW 358 rub.

Tested features:

• Power consumption - 11 watts
• Color temperature - 3380K
• CRI 68.5

Ribbon output: for a warm ribbon, a conditionally good CRI (no one has come up above yet), but low power.

Tape SKY LARK 4,8 W / m, 12VDC, IP65, 3000K, 5 m art. SLS-012W048A6508 765 rub.

Tested features:

• Power consumption 16 watts
• Color temperature 3020K
• CRI 54

Ribbon output: low CRI, power still does not reach the declared level.

Tape SKY LARK 4,8 W / m, 12VDC, IP65, 4200K, 5 m art. SLS-012N048A6508 765 rub.

Tested features:

• Power consumption 16 watts
• Color temperature 4400
• CRI 71

Conclusion on the tape: a terrible color rendering index, the power still does not reach the declared.

Tape Gauss LED 2835/60-SMD 4.8W 12V DC cool white IP66 (blister 5m) art. 311000305 962 rub

Tested features:

• Power consumption 19 watts
• Color temperature 6100K
• CRI 78

Ribbon output: conditionally good color rendering index, power close to stated.

Gauss LED 2835/60-SMD 4.8W 12V DC tape warm white IP66 (blister 5m) art. 311000105 962 rub

Tested features:

• Power consumption 19 watts
• Color temperature 2700K
• CRI 61

Ribbon output: poor color rendering index, power close to stated.

What is the result?

Everyone lies! But in varying degrees.

All tapes did not reach the stated characteristics of energy consumption, from which it can be concluded that they do not shine as brightly as they could. Worst of all in this matter are the cases with SmartBuy tapes.

Warm ribbons for color reproduction worse than cold.

If you are interested in the topic let me know, continue and further testing tapes. The benefit of them I have a little.