# Desktop Printing Calculator Donau TECH K-DT8121-09 — 12-digit display, dimensions 267×202×77 mm, white

**URL:** https://aio.lv/en/product--donau-k-dt8121-09--11799789
**Data updated:** 2026-03-09 07:36 (EET)
**Category:** Calculators
**Manufacturer:** Donau
**Manufacturer code:** K-DT8121-09
**EAN:** 5901503619919
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 84.99 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 70.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--donau-k-dt8121-09--11799789

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.89 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

Donau TECH K-DT8121-09 is a desktop printing calculator with a 12-digit numeric display and built-in printer for paper tape output. The unit measures 267×202×77 mm and comes in white. Designed for office and accounting tasks, it supports standard arithmetic operations and printed records for bookkeeping, cash handling and invoicing verification.

## Long description

Donau TECH K-DT8121-09 is a desktop printing calculator with a 12-digit numeric display and integrated paper printer. The compact housing measures 267×202×77 mm and is finished in white, making it suitable for placement on office desks and accounting workstations. The device supports standard arithmetic functions and produces a continuous printed tape for record keeping, verification of calculations and simple bookkeeping tasks.
Advantages
The calculator combines a clear 12-digit display with an internal printer to provide both on-screen and paper confirmation of entries. Its desktop format and moderate footprint allow it to fit into typical office setups while offering tactile keys for reliable data entry. The built-in printing mechanism enables immediate documentation of transactions and calculations without requiring a separate printer, simplifying daily accounting and cash-handling workflows.
Suitable for
General office arithmetic and desk calculations
Bookkeeping and audit trail generation with printed tape
Cash handling and point-of-sale verification in small retail or service counters
Invoice checking and subtotal verification during billing tasks
Key specifications
Display: 12-digit numeric display for large numeric readout
Printing: Integrated paper tape printer for continuous receipts and calculation logs
Dimensions: 267 × 202 × 77 mm suitable for desktop placement
Color: White housing for neutral office appearance
Functions: Standard arithmetic operations with printed output for record keeping
How to use
Place the calculator on a flat, stable surface near your workspace and ensure the paper roll is correctly installed in the printer compartment. Use the numeric keypad to enter values and standard function keys for addition, subtraction, multiplication and division; press the print key or set the printing mode to record each operation onto the paper tape. Read results directly on the 12-digit display and use the printed tape as a physical record for verification, reconciliation or filing.
Usage recommendations
For reliable printing, use paper rolls compatible with desktop printing calculators of similar width and thickness. Keep the device away from excessive dust and moisture and periodically check the paper feed and print head for proper alignment to maintain clear, legible printouts.

## FAQ

### How much does the Donau TECH K-DT8121-09 printing desktop calculator cost, and is it available for purchase?

The price is 84.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1390 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Donau TECH K-DT8121-09 printing desktop calculator be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Donau products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Donau service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11799789/67201164_large.webp