We promise the products we sell are quality productsWish you have a pleasant shopping experienceProduct Detail:Connection:L， N: AC power inputGND: DCpower output "-"V: DCpower output "+"+V / ADJ: Adjust the output voltageSafety Compliance: CCC/ FCC / CEWorking Temperature: 0~40℃Storage Temperature: -20~60℃Ambient Humidity: 0~95% Non-CondensationSpecial Note:This Power Supply Unit "DOES NOT" come with installation instruction， wiring cable，on/off switch， or screws.Professional Installation of qualified electrician is highly recommended.Applications:adaptor designed specifically for our LED strip light.Its high quality and new power supply for 3825 5050 5630 3014 2835 7020 led strip Light，Wireless Router， ADSL Cats， HUB， Switches， Security Cameras. Audio/Video Power Supply etc，it is easy connection and simplicity to use.How to calculate Support max LED Strip Length:Assumption:Your LED Strip 60LEDs/m， and each LED 0.2W， then calculate max LED Strip Length: 0.2W/LED × 60LEDs/m=12W/m， 24W(this listing)÷12W/m=2m，So， Support the LED Strip(60LEDs/m， 0.2W/LED) Length (Max)=2mInput Voltage: AC110V/220VOutput Voltage: 12V 1A 12WPackage Include:1 X Transformer Power Supply