From the manufacturer: This extremely safe honeycomb light is specially protected by an insulator in order to allow every buyer to use it with peace of mind. 19 pack garage led lights consume 39000LM, high light efficiency, high brightness ?Garage LED Ceiling Lights FEATURES: ? High safety factor: built-in plug, it is difficult for fingers to touch the plug. ? Super bright :39000LM.high quality LED Chips, much brighter ? The lamp tube is wider, the light-emitting surface is larger and brighter, Wider range of lighting. ? The led shop lights installation is tighter than other shops and not easy to loosen. ? DIY design, you can splicing different shapes according to personal preferences ? LED garage lighting garage lights ceiling led Parameters: ? Input Voltage: AC 100-240V ? Working Temperature: -20°C-50°C ?How to Install the LED Ceiling Lighting Fixtures Please refer to the manual for installation steps ?ATTENTION: 1.Please kindly read the User Manual before installation.we are not responsible for imprroperr wiing and we do not offer refunds or exchanges if you wire IT incorrectly and damage the lights. 2.The total wattage of all light tube connected cannot exceed 1000W, preferably less than 700W. ?APPLICATION: -Widely used for home garages, auto detailing shops, showrooms, gym, barber shops to a new level. Any place wants a uniform light distribution, great lighting effect., et.