FCOB+WS2811 IC LED strip light.12V 5M 720 LEDs/m 21W/M WS2811 COB LED strip light, One WS2811 IC can control up to 36 lamps. IP30 non-waterproof. Higher light output, Ra>90 and no dark spots, 180° beam angle design. WS2811 RGB, with compatible controller, can display thousands of dynamic colour effects such as rainbow etc. Please note: The colour sequence of the light strip is BRG (not RGB). Please select the correct colour sequence for connection when connecting. Compatible with most RGB controllers available on the market. This LED luminaire must work with RGB controllers. It is compatible with addressable controllers such as SP611E(B09GVK267L), SP105E(B06XXCC17Y), SP630E(B0BTYJQDNB) , SP530E (B0CSCLP31T)etc. and can also work with Arduino, Raspberry Pi, K-1000C and other programming controllers. Linkable design. Double-layer FPCB that balances voltage drop, heat dissipation and flexibility. Strong adhesion makes the light strip stick firmly to wood and other clean surfaces. Cuttable strip, cut the LEDs to any desired length along the cut marks without damaging the strip. DIY strip for an immersive DIY experience. Compared to strips with LED chips such as 5050SMD, FCOB RGB IC strips use FCOB beads as the light source and are coated with adhesive to produce a more even and consistent light, while FCOB RGB WS2811 RGB IC LED strips have no dark spots, ensuring a more even and brighter linear illumination.(Formal use should take into account factors such as voltage drop). Safe and Low Voltage. Compared with ordinary LED strips, the light is soft and uniform, safer for your eyes. With real double-layer FPCB board, BTF-LIGHTING FCOB LED strip has better heat dissipation than other strips, safer for children and pets.