16.5VAC 20VA AC Transformer Plug in with PTC Fuse Compatible with Napco Express Keypads. This plug-in power supply provides power from a standard outlet to your Napco Express Series Keypad.


  • Voltage Conversion: It can convert voltage from the local power outlet to the required voltage for the device being used. For example, it might convert 220-240 volts down to 110-120 volts, or vice versa.
  • Compatibility: The transformer plug may feature multiple plug types or adapters to accommodate different outlet configurations found in various countries.
  • Safety: Quality transformer plugs incorporate safety features such as surge protection, overload protection, and built-in fuses to protect connected devices from electrical damage.
  • Compact Design: The transformer plug is designed to be lightweight and portable, making it convenient for travelers to carry and use with their electronic devices.
  • Durability: Napco transformer plugs are typically constructed with durable materials to withstand frequent use and travel.

Napco Transformers prioritize quality, reliability, and safety in their products, adhering to industry standards and regulations. They often incorporate advanced technologies and materials to optimize performance and energy efficiency.

Additionally, Napco Transformers typically offer customization options to meet specific customer requirements, such as voltage ratings and mounting configurations.

Overall, Napco Transformers is known for providing high-quality transformers that cater to a diverse range of applications, contributing to the efficient and reliable operation of electrical systems worldwide.

Technical Details

Manufacturer Part #: TRF12
Power: 20VA,16.5VAC

NOTE: Only for use with Napco Express Series Keypads or devices that are compatible with 16.5VAC power supplies.