Why home solar lights always was quenched in the middle of the night

Lamps and lanterns of protective class IP65 is what mean? Answer: the dust level ( First I said) 0:1: no protection to prevent large solid intrusion 2: against intrusion medium-sized solid 3: prevent small solid enter into 4: prevent object is greater than 1 mm solid into 5: the



the degree of protection IP65 lamps and lanterns' IP65 IP is Ingress Protection, IP rating for electrical equipment enclosure Protection grade of foreign invasion, such as explosion-proof electric appliance, waterproof and dustproof appliances, sources are the standard of the international electrotechnical commission IEC 60529, this standard has been adopted in 2004 to the national standard. 】 What do you mean?

a: dust level ( First I said)

0:

1: no protection to prevent large solid intrusion

2: prevent medium-sized solid intrusion

3: prevent small solid enter into the

4: prevent object is greater than 1 mm solid into

5: prevent harmful dust accumulation

6: completely prevent dust from entering the

waterproof level ( The second P said)

0:

1: no protection can not influence the water drops into the shell

2: when the shell inclined to 15 degrees, can not influence the water drops into the shell

3: water or the rain to the shell from the corner of the 60 degrees had no effect on the

4: liquid splashing from any direction to the shell no harm influence

5: rinse without any harm

6: can be used for the cabin environment within the

7: resistance to flooding in a short time ( 1米)

8: in certain 【 In certain zibo yu cicc village 17 sai-jo dynasty Ming office building of the first year of the king of wei general title Qin Guojun in certain Yu Yongli born through six years show forever forever through nine years jinshi wing through thirteen years officer worship ministry of war to assistant minister title Zheng Guogong forever through 14 years to build the general title of king Qin Guojun. 。 。 】