# YFFSFDC N2840 2.4G Wireless Numeric Keypad — Slim USB-A Numpad with Tab Key

> YFFSFDC N2840 2.4G Wireless Numeric Keypad summary. A slim 14.9 x 9 x 2 cm 2.4GHz wireless numpad with digits plus Tab, Home, Mail, Delete and 000 keys.

Tags: keyboard, yffsfdc, n2840, numpad, wireless, 2-4ghz
Source: https://www.amazon.co.jp/dp/B0D1VBJLXW
Article page: https://web-autoai.com/articles/yffsfdc-n2840-24g-wireless-numeric-keypad-slim-usb-a-numpad?lang=en

Prices and ratings change over time — check the article page for the current values.

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## Overview
The YFFSFDC N2840 is a standalone numeric keypad that connects through a 2.4GHz wireless receiver plugged into a USB-A port. It is aimed at people who want a dedicated number block beside a compact keyboard, or at laptop users whose built-in keyboard leaves them without a numpad for spreadsheets and data entry.
At 149 x 90 x 20 mm it is slim and small enough to slip into a pocket or a document bag, so the design clearly assumes you will carry it around. Power comes from a single AAA battery, which is not included, and there is no charging circuit to think about — you simply swap in a fresh cell when needed.
Beyond the digits, the layout adds Tab, Home, Mail and Delete keys plus a 000 key for entering long figures in one press. Anyone who types numbers all day, whether for bookkeeping, inventory counts or Excel work, gets the most out of a pad like this.

## Connectivity & Compatibility
Connection is handled by a dedicated 2.4GHz receiver with a stated range of up to 10 meters. No driver installation is required: plug the receiver into a USB-A port and the pad is recognised. Bluetooth is not supported.
The pad is listed as compatible with Windows, iOS and Android. Note that the packaging may carry a Bluetooth logo even though the device works only over its 2.4GHz receiver, so do not expect it to pair as a Bluetooth peripheral. Because the receiver needs a USB-A port, tablets or phones with only USB-C will require an adapter.

## Product Info
Check the retailer's page for the latest price. Rather than replacing a full-size keyboard, it is a low-cost way to add the number block you are missing. The model number is N2840, and both the brand and manufacturer are YFFSFDC. Its slim, travel-friendly body and the practical Tab and 000 keys are what set it apart at this price.

## Best Use Cases
* Laptop users who crunch numbers in spreadsheets: the pad adds digits and a 000 key for one-handed entry, though a USB-A port or adapter is required.
* People who work on the road or in cafes: the 149 x 90 x 20 mm body fits in a bag and works as soon as the receiver is plugged in, but it is not for Bluetooth-only setups.
* Anyone who wants to avoid more desk cables: the 2.4GHz link reaches up to 10 meters, so you can add numeric input without routing a wire — not ideal if you insist on a rechargeable device.

### Product Disclosure (Amazon)
- Manufacturer: YFFSFDC
- Model: N2840
- ASIN: B0D1VBJLXW
- Note: This article covers a manufacturer-made product based on Amazon listing details.