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Help CenterLangma 7W LED PIR Sensor Ceiling Light/PIR+Light Sensor LED Light,LED PIR Sensor&LUX Control Ceiling Lamp
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Langma 7W LED PIR Sensor Ceiling Light/PIR+Light Sensor LED Light,LED PIR sensor&LUX control ceiling lamp
We don't have MOQ,there is no limits in quantity to order.
Product test:
100% of the lamps will be tested and keep lighting for 48 hours to test its quality reliability , and we will also test its temperature after 24 hours’ lighting.Then after it is cool we again test 100% of the lamps to see if it still work well . Each lamp should pass all these QC procedures before shipping to customer.
Trade information:
Trade terms: EXW, FOB,CIF
Payment terms: T/T, Western Union, Money Gram, Paypal and Escrow
Payment conditions: small order 100% in advance; large oder 30% deposit in advance and 70% balance before delivery
Delivert times: Sample:within 1 day only; Bulk order:3-5 days(Depend on QTY)
Shipping ways:DHL,EMS,Fedex,UPS,TNT, Hongkong Post etc.
Why is LED green product?
| category | Voltage(V) | Power(V) | Lumens(LM) | luminous efficiency(LM/W) | Lifespan(Hours) |
| Incandescent bulb | 240 | 45 | 470 | 15 | 1000 |
| Compact fluorescent lamp(CFL) | 240 | 12 | 600 | 60 | 8000 |
| LED spotlight | 240 | 5 | 450-500 | >80 | >50000 |
We can conclude from the above data: Under the same voltage and the same Lumens, incandescent bulb will cost 9 times power to LED. CFL is bette than incandescent bulb, but it also cost more than 2 times power than LED. But what matters the most is that LED can work for more than 50000 hours. However, the lifespan of CFL is only 8000hours and incandescent bulb is even as low as 1000hous.
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