New design and high quality. Input voltage: 12V-28V; Boost ratio: 1:7.5. 12V can be boosted to 80V, and 24V to 160V. Default LED current is 248mA, adjustable to 600mA via short-circuit on the board. Total power is limited to 40W or less. Optimized transformer efficiency: at 85°C, temperature increases by 30°C. In reverse dimming mode, ADJ is the dimming port; ground is brightest, and high voltage dims to off. ADJ must not be left unconnected; if not connected, it connects directly to ground. Connect VCC, GND, IN (activation), and ADJ dimming according to the board markings. Select positive and negative LED output ports. Specification: Model: CA-6019 Input Voltage: 10-28V Output Voltage: 5-165V Color: Green Material: Plastic Size: 110x50mm Package Contents: 3 x Constant Current Driver Board Notice: 1. The boot has soft start and other protections. The shutdown port must be connected to the ground when not in use. Disconnection is not recommended. 2. The dimming gate setting is 0-3V. 0V is the brightest, 2-2.5V is very dim and essentially off near 3V. At this point, the output is 0V. Only the above package content is included; other products are not. Note: Light photography and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.