We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular power supply unit with metal casing and terminal connections

YINGHUA

YINGHUA 12V 3A Black Power Supply for Door Lock

SKU CH-5J6V-NDMXK

Provides stable 12 V 3 A DC power for single access-control locks from 110–240 V AC input

  • Main functionEntrance
  • Product typeChain Guard
  • Main materialMetal
  • Reliable 12 V output from 110–240 V AC input
  • Powers a single electric lock with 3 A capacity
  • Built-in short-circuit protection with automatic recovery
  • Adjustable lock delay from 0 to 15 seconds
  • NC and NO outputs suit various lock types

12V 3A Power Supply for Door Locks

This power supply converts standard AC mains voltage to a stable 12 V DC output rated at 3 A. It is designed to run a single electric lock, access controller, exit button or RFID reader in a door access system. The unit accepts an input range of 110 V to 240 V AC and includes automatic protection against short circuits.

Installers powering one lock

The supply suits installations with a single lock where the 3 A rating provides sufficient current. It also fits projects that require selectable normally closed or normally open contacts and an adjustable lock delay of up to 15 seconds. Buyers planning to drive two locks simultaneously from one unit should consider the higher-rated 5 A version instead.

Adjustable 0-15 second lock delay

A built-in delay circuit lets the installer set the lock release time anywhere between 0 and 15 seconds to match site requirements. If a short circuit occurs, the supply temporarily disconnects output or blows its internal fuse to protect connected devices. This single safety and timing feature determines whether the unit matches the access system design.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $247.99
Pricier than about 87% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeChain Guard
Size & build
Main materialMetal
More details
Main functionEntrance

Questions about this item

How can I confirm the unit is delivering stable 12 V output after wiring it to my lock and controller?

Measure the DC terminals with a multimeter while the lock cycles; a steady reading at the rated voltage shows the supply is operating correctly.

What comes in the box and what must I source separately for a single-lock installation?

The power supply itself is included; you will need to provide the electric lock, access controller, exit button and all low-voltage wiring.

Should I select the 12 V 3 A or 12 V 5 A version for one lock?

For a single lock the 3 A model is sufficient; choose the 5 A version only if you plan to run two locks from the same supply.

More in Door Lock Sets & Deadbolts

Similar items