Size: 11 x 7.7 x 3.6CM
Input Voltage: 110V/220V ±15%
Output Voltage: 12VDC
Output Current: 0~3.2A
Shell Material: Metal case / Aluminum base
Protective: Shortage Protective， Overload Protective， Over Voltage Protective
Widely used in Industrial automation， LED display， communications， etc.
Safety Compliance: CCC / FCC / CE
Working Temperature: 0~40℃
Storage Temperature: -20~60℃
Ambient Humidity: 0~95% Non-Condensation
Only Supply ONE LED Strip
IN-DOOR use only!

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.
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， 40W(this listing)÷12W/m=3.33m， So， Support the LED Strip(60LEDs/m， 0.2W/LED) Length (Max)=3.33M

Package included :

1x Switch Power Supply Driver For LED Strip light