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Rectangular metal box with wall-mount hole, screw terminals and status LEDs

myVolts

myVolts 12V 3A 30W Door Access Power Supply

SKU CH-3JBM-CXZ27

A 12 V 3 A 30 W power supply with adjustable 0–15 s lock delay and selectable NO/NC outputs for door access control systems

  • TypeAT
  • Adjustable lock delay up to 15 seconds for flexible access timing
  • Selectable NO or NC outputs to match different electric lock types
  • Wide AC 110V to 240V input suits global mains voltages
  • Compact 104 x 68 x 32 mm metal case with wall-mount hole
  • Delivers 30 W at 12 V 3 A for reliable door control power

Door access power supply

The myVolts 12V 3A 30W unit powers door access control systems with a DC 12V output and 3A current. It accepts AC 110V-240V input for worldwide use. A built-in delay circuit allows lock timing from 0 to 15 seconds. NC and NO outputs support various electric lock types.

Practical limits of the AT type supply

The AT form factor suits fixed installations rather than standard PC chassis. The iron enclosure measures 104 x 68 x 32 mm and weighs 327 g. Wall-mount holes on the rear simplify placement near door frames. The 30W rating limits use to single locks or low-power controllers.

Replaces older fixed-timer or non-adjustable units

Installers upgrading from supplies without selectable NC/NO contacts or adjustable delay gain flexible lock control. The wide input range replaces region-specific models. It is not suited for multi-door systems needing higher total current or battery-backed supplies.

Pluspunten

  • Adjustable lock delay up to 15 seconds for flexible access timing
  • Selectable NO or NC outputs to match different electric lock types
  • Wide AC 110V to 240V input suits global mains voltages
  • Compact 104 x 68 x 32 mm metal case with wall-mount hole
  • Delivers 30 W at 12 V 3 A for reliable door control power

Specificaties

TypeAT

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How do I decide between the fixed 12 V 3 A output and a different voltage supply?

This unit only delivers 12 V at 3 A, so choose it when your door lock or controller is rated for exactly 12 V DC and draws up to 3 A.

What does the 30 W rating mean once the supply is installed?

It confirms the unit can continuously provide 12 V at 3 A (12 × 3 = 30) without overheating, matching the lock’s steady-state draw.

What does the AC 110–240 V input range cap in practice?

It lets the supply run on any mains voltage from 110 V to 240 V worldwide without a separate transformer or switch.

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