DODOLIGHTNESS 20 Key Rf Wireless Remote LED Controller 12-24v for 5050 3528 RGB LED Strip Light Supply voltage: DC12-24V Max Output current: 4A (each channel) Output: Three CMOS drain-open output Send frequency: 433MHZ Remote Distance: 20m Working temperature: -20-60 Control mode: RF Connect mode: Common anode Remote powered by: CR 2025(not included) Shell material: Aluminum Product size: L130*W64*H24mm Product weight: 165g Package size: L137*W80*H54mm Package weight: 195g 1. Supply voltage of this product is DC12V to 24V 2. The 4 wires coming out of the controller can't be incorrectly interconnected, or short circuit could occur. 3. Connect the wires of the controller and LED fittings as per the instruction. 4. Don't peel off the label on the controller in case any indication information will be missed. 5. The standard warranty is one year. Our company won't be responsible for any damage of the controller due to any wrong operation.