# Power supply BLOW 71-220# switching adapter 9 V 4000 mA DC 2.1/5.5 mm

**URL:** https://aio.lv/en/product--blow-71-220--11988232
**Data updated:** 2026-03-11 18:21 (EET)
**Category:** Portable Device Chargers
**Manufacturer:** BLOW
**Manufacturer code:** 71-220#
**EAN:** 5900804119401
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blow-71-220--11988232

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Switching power supply BLOW 71-220# provides 9 V DC at up to 4000 mA output. Compact external adapter with standard interchangeable barrel plug sizes 2.1 mm and 5.5 mm for powering routers, LED strips, CCTV cameras and other low-voltage devices. Designed for stable voltage delivery with built-in protection against overload and short circuit where applicable.

## Long description

The BLOW switching adapter 9 V 4000 mA is a compact external power supply designed to deliver a steady 9 V DC output with a maximum current of 4 A. The unit features interchangeable barrel plug sizes 2.1 mm and 5.5 mm to fit a wide range of low-voltage equipment. Its switching topology provides efficient conversion from mains voltage while keeping size and weight low, making it suitable for home and light commercial installations that require reliable low-voltage power.
Advantages
The adapter provides a stable 9 V output up to 4000 mA while maintaining a compact footprint suitable for confined spaces. Interchangeable barrel connectors increase compatibility with different devices without the need for additional adapters. Built-in protections help reduce the risk of damage from overloads or short circuits, and the switching design offers higher efficiency and lower heat generation compared with linear alternatives.
Suitable for
Powering routers and network equipment that accept 9 V DC
Supplying LED strip controllers and low-voltage lighting systems
Providing power to CCTV cameras and small surveillance devices
Powering audio equipment, small instruments, and consumer electronics rated for 9 V DC
Key specifications
Output voltage: 9 V DC
Maximum output current: 4000 mA (4 A)
Connector types: interchangeable barrel plugs 2.1 mm and 5.5 mm
Adapter type: external switching power supply
Protection features: overload and short-circuit protection (built-in where applicable)
Typical uses: routers, LED controllers, CCTV cameras, small DC devices
How to use
Confirm that the target device requires a 9 V DC power supply and that its current consumption does not exceed 4 A. Select the correct barrel plug (2.1 mm or 5.5 mm) and attach it securely to the adapter output. Connect the adapter to the device, ensuring correct polarity, then plug the adapter into a suitable mains outlet. Observe the device during initial power-up to verify stable operation. If the adapter has removable or interchangeable connectors, make sure they are fully seated before use.
Usage recommendations
Use the adapter indoors and in dry environments. Ensure ventilation around the adapter to avoid heat buildup. Do not exceed the specified current rating and avoid using the adapter with devices that require a different voltage. If prolonged operation at high load is expected, check that the device and adapter remain within safe temperature limits. Disconnect the adapter if you detect unusual noise, smell, or excessive heat.

## FAQ

### How much does the Power supply BLOW 71-220# 9V 4000mA cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 343 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 09.07.2026 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. All transactions are 100% secure and encrypted.

### 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 BLOW 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 BLOW 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/11988232/67443683_large.webp