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Black rectangular wall power adapter with barrel plug

BFKK

BFKK 5V VOIP Phone Power Adapter for Yealink T42S

SKU CH-9QS0-R3X9W

Replacement 5 V power supply for Yealink T42S and compatible IP phones

  • Compatible with multiple Yealink models including T42S
  • Replaces original PS5V600US and PS5V1200US adapters
  • Supports Yea-ps5v2000u power supply specifications
  • Delivers 5V output for VOIP phone operation
  • New condition ensures reliable performance out of the box

5V VOIP Power Adapter

This 5V AC adapter supplies power to compatible Yealink VOIP phones including the T42S. It replaces the original Yea-ps5v2000u, PS5V600US and PS5V1200US units. Office managers and IT teams use it to keep desk phones running when the factory supply is lost or damaged.

Simple plug-in installation

The adapter connects directly to the phone's DC input and a standard mains socket. No configuration or driver installation is required. The only common issue is selecting a model with the wrong voltage or connector polarity, so verify the phone's label matches the 5V output before connecting.

5V output with multiple current ratings

The unit covers the 600mA, 1200mA and 2000mA variants referenced in the supplier title, giving headroom for phones that draw up to the highest listed current. It will not suit phones that require a different voltage or a higher current than 2000mA.

Highlights

  • Compatible with multiple Yealink models including T42S
  • Replaces original PS5V600US and PS5V1200US adapters
  • Supports Yea-ps5v2000u power supply specifications
  • Delivers 5V output for VOIP phone operation
  • New condition ensures reliable performance out of the box

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the 5V output is stable on my Yealink T42S after connecting the BFKK adapter?

The phone should power on immediately, show no low-voltage warnings on its display, and complete a test call without rebooting.

What comes with the BFKK 5V VOIP phone power adapter and what must I source separately?

The adapter unit with its fixed mains plug and DC cable is included; the Yealink T42S handset, network cable and any mounting bracket are not.

Which of the listed Yealink part numbers — Yea-ps5v2000u, PS5V600US, PS5V1200US — matches the BFKK adapter for my T42S?

The adapter is offered as a direct replacement for all three part numbers, so any of them identifies the correct 5V unit for the T42S.

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