Modern hydraulic door closers (referred to as door closers) began with a patent registered by Americans in the early twentieth century. Unlike traditional door closers, they are buffered by throttling the liquid in the door closer. . The core of the hydraulic door closer design idea is to realize the control of the closing process, so that the various functional indicators of the closing process can be adjusted according to the needs of the person. The significance of the door closer is not only the automatic closing of the door, but also the protection of the door frame and the door body (smooth closing). More importantly, the door closer has become an indispensable part of the intelligent management of modern buildings.
Door closers are mainly used in commercial and public buildings, but they are also used at home. They have many uses, the most important of which is to close the door itself to limit the spread of fire and ventilation in the building.
[HANDS FREE READING LIGHT.]No more holding a flashlight by your hand or by your mouth, or wear a headlamp on your head, nodding your head like a robot to adjust the light directions when you are reading or busy in repairing. This flexible neck light helps you just focus on what you are doing without worrying about the light, whenever for reading in bed, repairing, craft, knitting, working and camping etc.
[LOVE TO READ IN BED AT NIGHT WITHOUT DISTURBING YOUR PARTNER?] Our book light is equipped by 2 LED for each arm. 1 LED for flashlight spot mode, another 1 LED for flood wide area light mode. Each arm has an independent switch for 3 brightness levels dimmable. Special lampshade design make it shining the smallest area with enough bright light for reading without disturbing your sound asleep partner.
[Eye Caring & Wider Lighting Area.]No flickering and harmful blue light filter design with advanced LED beads. Reduce eye strain for both kids and adults. 2 infinitely bendable necks allow you to set the best lighting areas you want. Paperbacks can also be used.
[NO MORE WASTING MONEY ON BATTERIES -EVER. ]FEATURES BUILT-IN RECHARGEABLE 700MAH LI-ION BATTERY. It has a life-span of 1000 cycles, equal to 3,000 pcs of AAA batteries, save your money and save the earth. Enjoy your wireless up to 10 HOURS reading without needing charge.Charger not included. Standard micro-USB CABLE included. No headache if the cable lost.
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Ningbo Wason Lighting Technology Co.,Ltd , https://www.wasonlights.com