describe:1.Promote Plant GrowthThis professional heating pad can continuously provide a constant working temperature, effectively promoting the growth of plants, seedlings, flowers, vegetables and fruits.2.3 SizesThe heating pad comes in two sizes: 50.8x25.4 cm/20x10 inches and 50.8x50.8 cm/20x20 inches and 101.6x50.8 cm/48x20 inches. You can choose according to the size of the pallet.3.Accurate and ReliableProfessional controller helps to better monitor the entire heating system. 3 selectable buttons provide recommended settings and a heat probe to help you get a real feel for growth.4. [Temperature Control] The seedling heat pad is designed with 6-level temperature adjustment and timing functions to bring the most suitable environment and time period for the growth of seedlings.5.Wide ApplicationIP67 waterproof construction keeps moisture out for optimal safety. It is widely used in seeding, germination, home brewing and pet enclosure terrariums, such as those for reptiles.Specification:Material: PVCColour: Blacksize:S: (Length x Width) 50.8x25.4cm/20x10 inchesL: (Length x Width) 50.8x50.8 cm/20x20 inchesXL: (Length x Width) 101.6x50.8 cm/48x20 inchesPower: 17. 5W(S), 45W(L)Waterproof: IP67Voltage: 100-240VPackage Included:1 x seedling heating pad1 manualnotes:1. Due to light and screen differences, the color of this item may be slightly different from the picture.2. Please allow 0.5-2cm differences due to manual measurement.