Usage Tips:Features: *Auto Turn On & OffThis led grow bar can be set up to turn off after 3H/ 9H/ 12H. After you set up the hours, do not manually turn off the light or cut off the power supply, the light will automatically turn on at the same time the next day, and every day *5 Adjustable Brightness LevelsThere are 5 different levels of dimmable light - 20% to 100% - to meet each plant's lighting requirements at different stages. *1x/2x/3x/4x 30CM & 50CM LED Strip Lights1-4 strips and each strip with 30CM or 50CM length, 30CM with 42 LED lights,50CM with 72 LED lights with excellent quality internal chip, our led grow light strips just put out enough luminosity to get the job done while generating less atmospheric heat, and tend to last longer. No need to worry about burning the plants. *Easy & Flexible InstallationThe grow light bar pack comes with 4-16pcs screws and double-sided tape (each strip use4pcs screws when applied). Compact design fits for various fixtures and surfaces. The power cord is 1.25M/49.21inch long. *Wide ApplicationThe grow lamp is convenient for a number of potted landscape and indoor garden plants, such as Basil, Rosemary, Succulents, Daffodils, Plumeria, Aloe, Orchids, Thyme, Cucumbers, Tomatoes, Peppers, etc. Ideal gardening lights indoor. Specifications: Color: Sunlight LED Qty.: 30cm: 42pcs LED each strip, 50cm: 72pcs LED each strip Wavelength: 380-800nm Lamp Strip Length: 30cm/11.8inch, 50cm/19.6inch Lamp Strip Width: 1cm/0.39inch USB Cable Length: 125cm/49.21inch RA: 80 Material: PC, ABS Input voltage: 5V/2A Power: 10W Lumen output: 100lm each lamp Life time: 50000 hours Model: USB Model 30CM/50CM One Tows 1/2/3/4 LED Grow Light Strips Certification: RoHS CE FCC Package includes: 1Set One Tows Two LED Plant Grow Light Strips There are 5 different levels of dimmable light - 20% to 100% - to meet each plant's lighting requirements at different stages This led grow bar can be set up to turn off after 3H/ 9H/ 12H The grow light bar pack comes with 4-16pcs screws and double-sided tape (each strip use 4pcs screws when applied)