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Rectangular plastic keypad with numeric buttons and RFID card reader area

YINGHUA

YINGHUA B03 RFID Access Control Keypad Door Lock

SKU CH-BHKT-K1S76

A standalone 125KHz RFID keypad supporting 1000 users with card, PIN or combined entry for doors

  • TypeChain Guard
  • MaterialMetal
  • FunctionEntrance
  • Standalone operation needs no computer connection
  • 1000 users supported with cards or codes
  • Reads 125 kHz and 13.56 MHz credentials
  • Metal housing works from -10 to 60 °C
  • Built-in doorbell button adds convenience

Standalone RFID Keypad for Doors

The YINGHUA B03 is a standalone access-control keypad that reads 125KHz EM cards and accepts PIN codes. It supports up to 1000 users and works without a computer connection. The unit suits homes, offices, hotels and apartment blocks where a simple, self-contained entry system is required.

Surface Mount with 12 V DC Wiring

The reader measures 120mm by 78mm by 22mm and mounts on a flat surface. Installation requires a DC12 V power supply and an electric lock or strike wired to the relay terminals. Common issues include reversing the 12 V polarity, exceeding the 0-10cm read range by spacing the reader too far from the card, or forgetting to enrol the master card before adding users.

Stable Operation from -10 to +60 °C

The keypad draws its rated working current continuously while powered and maintains the specified read distance during prolonged use. The plastic housing tolerates 20%-90% relative humidity without condensation. No active cooling is present, so the unit relies on ambient airflow; sustained heavy traffic does not change its response speed or card recognition reliability.

Highlights

  • Standalone operation needs no computer connection
  • 1000 users supported with cards or codes
  • Reads 125 kHz and 13.56 MHz credentials
  • Metal housing works from -10 to 60 °C
  • Built-in doorbell button adds convenience

Specifications

TypeChain Guard
MaterialMetal
FunctionEntrance

Questions about this item

How do I verify the keypad is working after wiring it to 12 V DC?

Apply power and press the door-bell button; the unit should chime. Then present an enrolled 125KHz card or enter a stored password — the relay will click and the door will release if the credential is accepted.

What comes in the box and what must I source separately?

The package contains the B03 keypad reader only. You must supply a 12 V DC power supply, an electric strike or magnetic lock, exit button, and 125KHz EM cards or key-fobs for the 1000-user capacity.

Should I choose the 125KHz or 13.56 MHz version for my existing cards?

Select 125KHz if your current credentials are EM-format proximity cards; choose 13.56 MHz only if you use MIFARE-type credentials, because the two frequencies are not interchangeable.

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