China Lighting factory led downlight 900 lumens

Nawa watts na 900 lumens ya jagoranci ƙasa?

Zai kasance 9-10w. Idan fitowar lumen LED shine 120lm/w, CRI 80

80% hasashe haske, ƙarshen fitowar hasken haske zai zama 120 × 80% = 96 lm / w

Dangane da 96lm/w, ikon don hasken wuta zai zama 9-10w.