# Wireless audio transmitter Synergy 21 S21-I-00145

**URL:** https://aio.lv/en/product--synergy21-s21-i-00145--3259710
**Data updated:** 2026-01-13 17:40 (EET)
**Category:** Electronics Accessories
**Manufacturer:** Synergy21
**Manufacturer code:** S21-I-00145
**EAN:** 4038816022684
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--synergy21-s21-i-00145--3259710

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.08.2026 | free |
| Pickup points | 06.08.2026 | 1.89 EUR |
| Courier delivery to door | 06.08.2026 | 4.99 EUR |

## Summary description

The Synergy 21 S21-I-00145 is a wireless audio transmitter that utilizes Bluetooth technology for seamless connectivity. It features a 3.5 mm host interface and offers a transmission distance of up to 15 meters, making it ideal for various audio applications. Enjoy high-quality sound without the hassle of wires, perfect for home or professional use.

## Long description

The Synergy 21 S21-I-00145 wireless audio transmitter uses Bluetooth connectivity to send audio from a 3.5 mm host interface to compatible receivers over distances up to 15 meters. Designed for straightforward setup, the compact transmitter supports common audio sources such as phones, tablets, laptops and audio players with a standard headphone output. The device enables cable-free audio transmission for listening, monitoring or basic AV integration where a short-range wireless link is sufficient.
Advantages
The transmitter offers simple Bluetooth pairing and a universal 3.5 mm connection that works with many consumer and professional audio sources. Its compact form factor and plug-and-play behaviour remove the need for complex installation. With a specified transmission range of up to 15 meters, the unit covers typical room-sized environments and small adjacent rooms. The design emphasizes reliable short-range wireless audio transfer and easy portability.
Suitable for
 Streaming audio from phones, tablets or laptops to a Bluetooth speaker or headset
 Connecting non-Bluetooth audio sources to Bluetooth-enabled receivers
 Use in living rooms, offices, classrooms or small event spaces
 Temporary setups for presentations, demonstrations or personal monitoring
Key specifications
 Wireless technology: Bluetooth (version determined by manufacturer)
 Host interface: 3.5 mm analog audio input
 Maximum transmission distance: up to 15 meters (line of sight may vary)
 Form factor: compact, portable transmitter
 Power: powered via integrated battery or external supply depending on model (refer to manufacturer documentation)
How to use
Connect the 3.5 mm plug to the audio output of the source device, power on the transmitter and enable pairing mode according to the manufacturer instructions. On the receiving Bluetooth device, search for available transmitters and select the Synergy 21 transmitter from the list. Once paired, start playback on the source device; audio will be transmitted wirelessly to the paired receiver. For optimal performance, keep the transmitter and receiver within the recommended range and avoid large physical obstructions.
Usage recommendations
Place the transmitter in a location with minimal interference from other wireless devices and maintain a clear line of sight where possible. For continuous or professional use, verify power options and charging procedures in the manufacturer documentation and periodically check pairings to ensure stable audio transmission.

## Specifications

| Feature | Value |
|---|---|
| Wireless technology | Bluetooth |
| Product colour | Black |
| Host interface | 3.5 mm |
| Housing material | Plastic |
| Transmission distance | 15 m |
| Number of simultaneously connected devices (max) | 1 |

## FAQ

### How much does the Wireless audio transmitter Synergy 21 S21-I-00145 cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 104 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 03.08.2026 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. 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 Synergy21 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 Synergy21 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/3259710/64209149_large.webp