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Silver metal rectangular power supply unit with screw terminals and voltage selector switch

Vszerda

Vszerda S-120-12 12V 10A 120W power adapter

SKU CH-R059-4CGSY MPN S-120-12

Converts 110 or 220 V AC to 12 V DC at 10 A with a selectable input switch and metal enclosure

  • ColorSilver
  • Delivers stable 12 V DC at 10 A for reliable device operation
  • Accepts 110 V or 220 V AC input via selector switch for worldwide use
  • Built-in automatic fan activates only when needed for quiet cooling
  • Wide -40 °C to 65 °C operating range suits harsh environments
  • Compact 7.87 × 3.93 × 1.77 in metal enclosure fits tight spaces

Power supply for CCTV and LED strips

The Vszerda S-120-12 converts AC 110 V or 220 V to a stable DC 12 V output rated at 10 A and 120 W. It is built for installers who need a compact metal-cased unit to run security cameras or LED lighting from mains power. The supply includes an input-voltage selector switch and screw terminals for secure wiring. It operates from -40 °C to 65 °C and carries CCC, FCC and CE compliance marks.

Installation notes and common issues

Mount the unit using the 2.5 mm fixing holes and connect L, N, COM and V terminals according to the label. Set the 110 V / 220 V selector before applying power; forgetting this step is the most frequent cause of immediate failure. The built-in fan starts automatically under load, so allow airflow around the 7.87 × 3.93 × 1.77 inch case. Do not open the cover — high voltage is present inside and service should be left to qualified personnel.

Output voltage adjustment range

A trimmer labelled ADJ allows the DC output to be varied by approximately 15 % around the nominal 12 V level. This lets installers compensate for voltage drop on long cable runs to cameras or LED strips. If the project requires a fixed 12 V with no adjustment, or a different output voltage entirely, this model will not suit the application.

Highlights

  • Delivers stable 12 V DC at 10 A for reliable device operation
  • Accepts 110 V or 220 V AC input via selector switch for worldwide use
  • Built-in automatic fan activates only when needed for quiet cooling
  • Wide -40 °C to 65 °C operating range suits harsh environments
  • Compact 7.87 × 3.93 × 1.77 in metal enclosure fits tight spaces

Specifications

BrandVszerda
ModelTFS-120-12
Part NumberTFS-120-12
ColorSilver

Questions about this item

How do I verify the S-120-12 is working correctly after wiring it up?

Measure the DC output at the V+ and COM terminals with a multimeter; it should read 12 V under load. Confirm the fan spins when the unit warms up and that the green power LED stays lit.

What comes in the box and what must I supply myself?

The box contains one S-120-12 switching power supply. You must provide the AC mains cable, the screw-terminal connectors for L, N, COM, V+ and ADJ, and mounting screws for the 2.5 mm fixing holes.

Which voltage setting should I select on the 110/220 V switch for my mains supply?

Set the input selector to 110 V if your mains is 110 V, or to 220 V if your mains is 220 V. Choose the correct position before applying power to avoid damage.

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