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Black rectangular 12V 3.5A power adapter with 5.5mm barrel connector and 140cm cable

Alarmpore ALA-12V3.5A 12V 3.5A 42W power adapter

SKU CH-KPFN-1AMN1

Delivers 12 V at up to 3.5 A (42 W) through a 5.5 × 2.5 mm barrel plug compatible with 2.1 mm jacks, accepting 100–240 V AC input

  • Type12 V
  • ColorBlack
  • Specifications42 watts, 12 volts_of_alternating_current, 3.5 amps, 120 vol
  • Connector A5.5*2.5/2.1mm Barrel Connector
  • Connector B5.5*2.5/2.1mm Barrel Connector
  • Cable Jakcet TypePlastic
  • Delivers 42 W maximum output for reliable 12 V device operation
  • Universal AC 100-240 V input lets you use it worldwide without a voltage converter
  • 5 × 2.5 mm barrel plug also fits 2.1 mm jacks for broad compatibility
  • Built-in over-voltage, short-circuit and over-temperature protection keeps connected gear safe
  • 140 cm cable length gives flexible placement for cameras, routers and other 12 V equipment

What this adapter does

The Alarmpore ALA-12V3.5A converts AC input from 100 to 240 volts at 50 or 60 hertz into a regulated DC 12 volt output rated at 3.5 amps and 42 watts maximum. It terminates in a 5.5 by 2.5 millimetre barrel connector that also accepts 2.1 millimetre centre pins. The unit is supplied new in black with a 140 centimetre cable.

Who it suits and who it does not

This adapter suits devices that require exactly 12 volts DC at up to 3.5 amps and use the stated barrel jack polarity of centre positive. It will not suit equipment that needs higher current such as 5 amp or 10 amp loads, nor gear that requires 24 volt input, different connector dimensions, or waterproof construction for outdoor use.

Capacity and headroom

At 42 watts the adapter comfortably runs typical 12 volt household and office electronics including security cameras, wireless routers, audio equipment and 42 watt nail lamps. It reaches its limit at the rated 3.5 amp ceiling, so any load that draws more current or requires sustained operation above 42 watts will need a higher-rated supply.

Highlights

  • Delivers 42 W maximum output for reliable 12 V device operation
  • Universal AC 100-240 V input lets you use it worldwide without a voltage converter
  • 5 × 2.5 mm barrel plug also fits 2.1 mm jacks for broad compatibility
  • Built-in over-voltage, short-circuit and over-temperature protection keeps connected gear safe
  • 140 cm cable length gives flexible placement for cameras, routers and other 12 V equipment

Specifications

BrandAlarmpore
SeriesALA-12V3.5A
ModelALA-12V3.5A
Part NumberALA-12V2.5A
Type12 V
ColorBlack
Specifications42 watts, 12 volts_of_alternating_current, 3.5 amps, 120 volts, 5.5*2.5/2.1mm Barrel Connector, type_a_2pin_na, 1, Cameras, ALA-12V3.5A
Connector A5.5*2.5/2.1mm Barrel Connector
Connector B5.5*2.5/2.1mm Barrel Connector
Cable Jakcet TypePlastic
Connector Style5.5*2.5/2.1mm Barrel Connector
Apple Compatible5.5*2.5/2.1mm Barrel Connector
FeaturesCameras, 5.5*2.5/2.1mm Barrel Connector, AC, 1, 42 watts
Dimensions5.7912 cm x 7.1882 cm x 11.4046 cm
Weight4.3 ounces
Package Quantity100
Package Contents100
Disclaimer1 year, not_applicable

Questions about this item

What barrel connector size does my device need for this 5.5×2.5/2.1mm adapter?

The adapter supplies a 5.5mm outer diameter with interchangeable 2.5mm or 2.1mm inner pins; match your device jack to one of those sizes before connecting.

Will the 100–240V AC input work with the 120V mains in my older building?

Yes, the input range covers 100–240V at 50/60Hz, so a 120V supply is well within specification.

How can I confirm the adapter is delivering the correct 12V DC output after plugging it in?

Measure the barrel connector with a multimeter set to DC volts; you should read approximately 12V with the centre pin positive and the sleeve negative.

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