---
product_id: 269711580
title: "TeleDynamics YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports"
brand: "yeastar"
price: "974 kr"
currency: DKK
in_stock: true
reviews_count: 4
category: "Yeastar"
url: https://www.desertcart.dk/products/269711580-teledynamics-yeastar-yst-o2-2-fxo-ports-o2-module-2
store_origin: DK
region: Denmark
---

# Lightweight at just 0.05 lbs for easy handling 2 FXO ports for seamless PSTN integration Plug-and-play installation with Yeastar P550 TeleDynamics YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports

**Brand:** yeastar
**Price:** 974 kr
**Availability:** ✅ In Stock

## Summary

> 📞 Power your office calls with Yeastar’s sleek 2-port FXO module!

## Quick Answers

- **What is this?** TeleDynamics YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports by yeastar
- **How much does it cost?** 974 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/269711580-teledynamics-yeastar-yst-o2-2-fxo-ports-o2-module-2)

## Best For

- yeastar enthusiasts

## Why This Product

- Trusted yeastar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual FXO Ports:** Connect two analog PSTN lines effortlessly for reliable communication.
- • **Trusted Performance:** Highly rated for flawless operation and perfect condition out of the box.
- • **Seamless Compatibility:** Optimized for Yeastar P550, ensuring smooth plug-and-play setup.
- • **Ultra-Lightweight Design:** At only 0.05 lbs, it’s compact and easy to install without hassle.
- • **Cost-Effective Connectivity:** Get premium PSTN integration at a competitive price point.

## Overview

The TeleDynamics YEASTAR YST-O2-2 FXO Module features 2 FXO ports enabling connection of two analog PSTN lines. Weighing just 0.05 lbs and measuring 7.62 x 7.62 x 1.52 cm, it offers lightweight, compact design optimized for seamless integration with Yeastar P550 systems. Ideal for professional environments seeking reliable, cost-effective telephony expansion.

## Description

YEASTAR 2 FXO ports. Two analog PSTN(POTS) lines. 0.05 lbs. normal weight 0.01 lbs. dimensional air weight 0.01 lbs. dimensional ground weight.

Review: Needed with the Yeastar P550 to connect PSTN lines - Works as expected. Easy to install.
Review: Great product and works perfectly - Product is exactly as stated in the page. It is correct and in perfect condition. I tried it and ita working perfectly. Got it for 235 AED which is the best price you can get this piece anywhere on the net. Highly recommended

## Features

- manufacturer: YEASTAR
- Item Trademark: YEASTAR
- Item Weight: pounds, pounds, 1., 1.
- Item Category: Landline Phone

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005MWMSRY |
| Best Sellers Rank | #35,113 in Computers ( See Top 100 in Computers ) #237 in Motherboards |
| Item model number | YST-O2-2 FXO Ports |
| Manufacturer | Yeastar |
| Product Dimensions | 7.62 x 7.62 x 1.52 cm; 453.59 g |

## Product Details

- **Brand:** YEASTAR
- **Compatible devices:** Laptop, Personal Computer, Smartphone, Tablet
- **Frequency band class:** Dual-Band
- **Model name:** YEASTAR YST-O2-2 FXO Ports
- **Special features:** Advanced Telephony Features, PBX Compatibility

## Images

![TeleDynamics YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports - Image 1](https://m.media-amazon.com/images/I/61tVn6TTeGL.jpg)

## Questions & Answers

**Q: it work on yeastar s100-040 to expand 2 more fxo?**
A: You. If you already have the S100-040, then yes, the YST-O2M will add another 2 FXO Ports.
Make sure you buy from Authorized Seller, since it requires you opening the unit to install the module. >> Platinum Yeastar Partner >>> CITICALLS

## Customer Reviews

### ⭐⭐⭐⭐⭐ Needed with the Yeastar P550 to connect PSTN lines
*by B***. on 28 September 2025*

Works as expected. Easy to install.

### ⭐⭐⭐⭐⭐ Great product and works perfectly
*by M***I on 20 May 2025*

Product is exactly as stated in the page. It is correct and in perfect condition. I tried it and ita working perfectly. Got it for 235 AED which is the best price you can get this piece anywhere on the net. Highly recommended

### ⭐ Review
*by B***R on 29 June 2023*

I purchased two of these previously with a new S50 unit. Worked fine. Just purchased a new S50 unit and two more of these modules. Modules did not work. Removed the older modules from the previous unit and they worked fine. The new modules look similar to the older ones but the chips are different. New modules do not work.

## Frequently Bought Together

- YEASTAR YST-O2-2 FXO Ports Module, 2 FXO Ports, Ethernet, Compatible with PBX Series & Asterisk, Red, 1 Pound, Business Use
- Yeastar S20 - PBX Business Phone System (Barebones) (No modules)
- Yealink T33G IP Phone, 4 VoIP Accounts. 2.4-Inch Color Display. Dual-Port Gigabit Ethernet, 802.3af PoE, Power Adapter Not Included (SIP-T33G)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/269711580-teledynamics-yeastar-yst-o2-2-fxo-ports-o2-module-2](https://www.desertcart.dk/products/269711580-teledynamics-yeastar-yst-o2-2-fxo-ports-o2-module-2)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-14*