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Zhihai high efficiency LED tube lightis a very advanced product that can be used on residential lighting, office lighting and etc. It has many great features.1. Substantial energy saving up to 60% compared with fluorescent lights. 2. CE and RoHS certifications attained. 3. Patented heat dissipation technology, 50000 hours long life with minimum luminance attenuation. 4. 40V-400V wide range of input voltage, AC and DC both work. 5. High power factor and power efficiency. 6. Self-rechargeable lithium battery inside, long time emergency lighting after power is off accidentally. 7. Using G13 light base, compatible with traditional fluorescent lights fixtures. 8. Instant start and flicker free. 9. Very even light distribution, no dazzling lights. 10. Good color rendering. 11. Warm and cold color temperatures are available. 12. Patented LED package technology.Zhihai® LEDTube LightModelZHTL-10AZHTL-10BZHTL-15AZHTL-15BZHTL-20AZHTL-20BZHTL-25AZHTL-25BLamp Total Wattage10W15W20W25WReplace20W (600mm / 2 ft)30W (900mm / 3 ft)40W (1200mm / 4 ft)60W (1500mm / 5 ft)DimensionΦ29x600mmΦ29x900mmΦ29x1200mmΦ29x1500mmLuminous Flux800Lm1,200Lm1,600Lm2,000LmEmergency LightingN/A≥1 hourN/A≥1 hourN/A≥1 hourN/A≥1 hourNet Weight200300g300g400g400g500g500g600gBeam Angle130°Color Temperature3500K (warm white) / 5500K (pure white)Color RenderingRa80Working Life≥50000HrsLuminous Decay< 10% in 10000Hr< 20% in 50000HrHousing MaterialAluminum & PolycarbonateLight BaseG13Working Temperature-40c- 60c / -40f- 140fWorking Humidity10%- 95%AC Input40315VacDC Input40 - 400VdcPower Factor≥0.95Power Efficiency≥0.90WARRANTY3 YEARS