Home Seeed Studio RS485 Breakout Board for Seeed Studio XIAO Dev Boards

Seeed Studio RS485 Breakout Board for Seeed Studio XIAO Dev Boards

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Sale price €5,49
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SKU: Seeed-113991354
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Guarantee & Return Policy

Effective Date: December 10, 2025

At OpenELAB, we are committed to providing accurate product descriptions and high-quality electronics. The following policy outlines your rights and obligations, designed to be fair to both our customers and our business operations globally.

1. Warranty Policy

A. Standard Limited Warranty (Global & US)

For customers in the United States, Asia, and other non-EU regions:

  • Warranty Period: OpenELAB provides a 12-month warranty from the date of delivery.

  • Coverage: This warranty covers defects in material and workmanship under normal use.

  • Resolution: We will repair or replace defective units at no charge.

B. Statutory Rights for EU/UK Customers (EU Compliance)

If you are a consumer residing in the European Union or the UK purchasing from our global site:

  • Statutory Guarantee: You are entitled to a 24-month statutory guarantee for conformity defects present at the time of delivery, in accordance with EU consumer protection laws.

  • Relation: The Standard Limited Warranty (Section 1.A) applies in addition to, and does not replace, your statutory rights.

C. Warranty Exclusions (Applies to ALL Regions)

Warranty coverage is VOID if the damage is caused by:

  1. Misuse: Incorrect installation, reverse polarity, or exceeding voltage limits.

  2. Unauthorized Modification: This explicitly includes soldering, cutting pins, modifying the PCB, or flashing unauthorized/beta firmware that "bricks" the device.

  3. Physical Damage: Drops, moisture/water damage, or electrical surges (lightning).

  4. Normal Wear & Tear: Consumable parts (e.g., batteries), unless defective upon arrival.

Note: For non-warranty repairs (e.g., customer-induced damage), we may offer repair services for a fee. Shipping and diagnostic costs will be borne by the customer.

2. Return & Refund Policy

A. Return Window

  • Standard: You may request a return within 30 days of receiving your order.

  • EU Customers: You have the statutory right to withdraw from the contract within 14 days of receipt without giving a reason.

B. Refund Conditions & Restocking Fees

To protect against policy abuse, the refund amount is strictly determined by the condition of the returned item.

1. Full Refund (100%)

  • The item is Brand New, Unopened, and Unused.

  • The original packaging is intact and sealed.

  • All accessories are present.

2. Partial Refund (Restocking Fee / Value Depreciation)
If the item is returned in a condition that prevents it from being sold as new, OpenELAB reserves the right to deduct a Restocking Fee (or "Compensation for Loss of Value" for EU customers) from the refund.
Deductions apply if:

  • Signs of Use: Visible scratches, mounting marks on screw holes, or fingerprints.

  • Damaged Packaging: Original box is torn, written on, or missing.

  • Technical Modification: The device has been powered on, programmed/flashed, or soldered.

  • Broken Seals: Anti-static bags or security seals have been opened.

Depending on the severity of the usage/damage, the deduction may range from 15% to 50% of the product price. Items damaged beyond repair due to misuse will not be refunded.

C. Shipping Costs

  • Defective / Wrong Item: OpenELAB covers the return shipping cost.

  • Customer Remorse (Changed Mind / Ordered Wrong Item): The customer is responsible for all return shipping costs to our designated return center (located in the US, Germany, or China, depending on your region). Original shipping fees are non-refundable unless required by local law.

3. Return Process (RMA)

To ensure a smooth return process, please follow these steps:

  1. Authorization: Contact us at info@openelab.io before returning any item. Returns without prior authorization will not be accepted.

  2. RMA Number: We will provide you with a Return Merchandise Authorization (RMA) number and the correct return address.

  3. Packing: Ship the item back in its original packaging with the RMA number clearly marked on the shipping label (not on the product box).

  4. Tracking: We strongly recommend using a trackable shipping method. OpenELAB is not responsible for returns lost in transit.
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Seeed Studio RS485 Breakout Board for Seeed Studio XIAO Dev Boards

Seeed Studio RS485 Breakout Board for Seeed Studio XIAO Dev Boards

€5,49

Shipping & Delivery Information

🚚 In-Stock Items: Orders for in-stock products are shipped within 24 hours after the order is placed.

📦 Pre-order Items: If a product is marked as "Pre-order", it means it is currently out of stock. We'll dispatch your order once we have restocked, usually within 10 working days. For special pre-sale items, the expected arrival date will be noted in the product description.

✈️ Express Shipping: Need your order urgently? Please contact us via email or live chat, and we’ll help arrange express delivery for you.

🔌 Seeed Studio RS-485 Breakout Board for XIAO

The RS-485 Breakout Board from Seeed Studio is a powerful and flexible expansion module designed specifically for all XIAO development boards. 🧩⚙️

⚙️ Features

  • 🧠 TP8485E Transceiver IC Converts UART serial data into RS-485 signals with high efficiency.

  • 🔁 Half-Duplex Communication Supports unidirectional data transmission over distances up to 1200 meters — perfect for long-range applications.

  • ⚡ Wide Voltage Support Operates on a single 5V or 12VDC power source for easy integration.

  • 🔧 3-Pin Terminal Output Simplifies wiring for both signal and power connections.


📡 Built for Demanding Environments

This breakout board is engineered for robust data transmission in:

  • 🌐 Large-scale deployments

  • 🔊 High-noise environments

  • 🏭 Industrial and embedded systems

Its compact design and reliable performance make it an ideal choice for developers needing stable RS-485 communication across extended distances.

 

Feature

  • 🤝 Seamless XIAO Compatibility Fully designed to work effortlessly with Seeed Studio XIAO development boards — plug, connect, and go!

  • 📡 Long-Distance Communication Supports RS-485 data transmission up to 1200 meters (≈ 3973 feet) — perfect for remote or industrial applications.

  • ⚡ Wide Voltage Support Operates reliably with both 5V and 12V power supplies for flexible integration.

  • 🔌 Dual 3-Pin Terminals Equipped with two 3-pin terminals for easy connection of signal lines and power input.

  • 📏 Compact & Efficient Design Sized at just 2 XIAO boards, this breakout board is ideal for space-constrained projects and embedded systems.

 

❓ What is RS-485?

RS-485 is a robust and efficient serial communication standard designed for applications that require:

  • 📡 Long-distance transmission

  • 🔗 Multipoint connectivity

  • 🔊 Strong noise immunity

Thanks to its reliability and flexibility, RS-485 is widely adopted in industrial automation, communication systems, and remote monitoring. 🏭📶


⚙️ How Does RS-485 Work?

RS-485 transmits data using two signal lines (A & B), enabling:

  • 🔁 Half-duplex communication

  • 🛡️ Excellent resistance to electrical noise

  • 🧩 Up to 32 devices on the same bus

  • 🆔 Each device has a unique address for accurate data exchange

When paired with the Modbus protocol, RS-485 becomes a powerful tool for efficient device communication and management across complex systems. 🔄📊


🚀 RS-485 with Seeed Studio XIAO

By integrating the Seeed Studio RS-485 Breakout Board with your XIAO development board, you unlock:

  • ⚡ High-speed, long-distance communication

  • 🧠 Access to the full XIAO ecosystem

  • 📦 A compact, plug-and-play solution for industrial and IoT projects

Whether you're building smart factories, sensor networks, or remote control systems, this breakout board delivers the reliability, range, and simplicity

 

Specification

Product

Seeed Studio RS-485 Breakout Board

Compatibility

Seeed Studio XIAO dev boards, Adafruit QT Py

Communication Interface

RS-485

RS485 Chip

TP8485E, half-duplex tranceiver

Terminal Connection

3-pin terminal for signal wire and 3-pin terminal for power

Communication Distance

1200 meters

Transmission Speed

250k bps

 

Hardware Overview

  • Onboard


Application

  • 🤖 Industrial Automation – Real-time control and monitoring of machinery and production lines

  • 🌐 Remote Monitoring Systems – Reliable data transmission across long distances for environmental or equipment tracking

  • 📊 Data Acquisition Systems – Collecting and processing sensor data for analysis and reporting

  • 🔌 Embedded Systems with Serial Communication – Seamless integration into microcontroller-based projects requiring UART/RS-485 connectivity



Part List

Seeed Studio RS-485 Breakout Board

x1

- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished, usually within 10 working days. Special pre-sale products will specify the expected arrival time in the description.

- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.

 1. General Shipping Information

  • We provide premium shipping methods with a tracking number for each order.
  • Shipping address should be input in English without any special symbols to help the courier company recognize your address in the system. We will ship according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
  • Please contact our customer service staff immediately if you need to cancel or change an order. Once your order has reached "Shipped" status, it can no longer be canceled or changed in any way. To avoid complications, please recheck your shopping cart before checkout.
  • We can ship all in-stock orders within 1 business day as your order has been confirmed.
  • All items are inspected before dispatch and are carefully hand-packed.
  • With standard courier practice, you need to check the contents of the parcel before signing for your goods. Otherwise, we will not be held responsible for any damage that may have occurred in transit.

 

2. Shipping Options for Germany, EU* countries and US

(For Products in Munich Warehouse, Long Beach Warehouse)

2.1 Orders with a value not exceeding €5:

Shipping Options:

Shipping Options Germany EU*
Deutsche Post

 €6 
Arrive in 3-4 Business Days		 €15 
Arrive in 5-9 Business Days
Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 €7.95 
Arrive in 3-7 Business Days		 €8.95 
Arrive in 5-9 Business Days
UPS Express

 €13.95 
Arrive in 2-4 Business Days		 €17.95 
Arrive in 3-7 Business Days


2.2 Shipping options for an order value between €5 and €30 inside Germany, €5 and €50 inside the EU, or €5 and €45 in the U.S.:*

Shipping Options:

Shipping Options Germany EU*
Deutsche Post

 €3.5 
Arrive in 3-4 Business Days		 €6 
Arrive in 5-9 Business Days
DHL Paket

 €6 
Arrive in 2-3 Business Days		 €15 
Arrive in 3-7 Business Days
DHL Express

 €14 
Arrive in 1-2 Business Day		 €65 
Arrive in 2-3 Business Days
Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 €4.95 
Arrive in 3-7 Business Days		 €6.95 
Arrive in 5-9 Business Days
UPS Express

 €11.95 
Arrive in 2-4 Business Days		 €13.95 
Arrive in 3-7 Business Days

 

2.3 Free shipping options for an order value of above €30 inside Germany, €50 inside the EU* or €45 in US :

Free Shipping Options Germany EU*
Deutsche Post

 Free Above €30 Free Above €50
DHL Paket 

 + €2 for Above €30 / Free Above €60 + €8 for Above €50 / Free Above €80
DHL Express 

 + €10 for Above €30 + €60 for Above €50
Free Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 Free above €45 Free above €60
UPS Express 

 + € 8.95 for Above €45 + € 11.95 for Above €45

  • Certain EU Countries are not included in our EU Zone definition: United Kingdom (excluding Ireland), Switzerland, Liechtenstein, Vatican City, Albania, Belarus, Norway, Ukraine, and Iceland. For the above countries, the International Shipping Rule applies.
  • The regions in the Non-Continental U.S. include: Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, the Armed Forces of America, the Armed Forces in Europe, the Armed Forces in the Pacific, and the U.S. outlying islands. The shipping and delivery to these areas are subject to the Non-Continental U.S. shipping rules.

2.4 Shipping Options for International Countries:

(via Deutsche Post or YunExpress)

Order Amount International
€0 - €15 €8
€15 - €30 €7
€30 - €50 €6
€50 and above €4

Important Notice:

  • Please verify the inventory location on the product page before placing your order to confirm delivery timeframes. 
  • For products in the Shenzhen warehouse, we will typically first ship the products from the Shenzhen warehouse to our Munich warehouse or Long Beach warehouse, which will take around 1.5 weeks. After we receive the shipment in Munich/ Long Beach, we will send the items to you. We will only arrange YunExpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50.
  • If you place an order with products from both Munich and Shenzhen warehouses, we will first ship the products in the Munich warehouse, and then send the remaining products to you when we receive them from Shenzhen.

 

3. International Warehouse

Our products are stored in both our Munich and Shenzhen warehouses to provide more flexible logistics solutions tailored to different regions and customer needs. On each product's description page, we indicate the specific warehouse location to help you better plan your purchase and delivery schedule.

3.1 German Warehouse

For products stored in our warehouse in Munich, we use either Deutsche Post or DHL for shipping, depending on the size of the package. Logistics within Germany are very efficient, with an estimated delivery time of 2-4 business days, ensuring you receive your order quickly and conveniently. For Western EU countries, the estimated delivery time is 4-6 business days. For Eastern EU countries, the estimated delivery time is 6-8 business days.

3.2 US Warehouse

For products stored in our warehouse in Long Beach, we use either USPS or UPS for shipping, depending on the size of the package. Logistics within U.S. are very efficient, with an estimated delivery time of 3-7 business days, ensuring you receive your order quickly and conveniently.    

3.3 Chinese Warehouse

We will only arrange YunExpressexpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50. Orders directly shipped from our Shenzhen warehouse are handled by YunExpress. Given the complexities of international shipping, the estimated delivery time for these packages is around 10 business days, though this may vary slightly due to customs processes or other uncontrollable factors. Otherwise, the products will first be shipped from China to our Munich warehouse and then shipped to the final destination. 
To ensure that your order is delivered within your desired timeframe, we recommend reviewing the warehouse information provided on the product pages before placing your order and selecting the appropriate shipping option. If you have any questions or need further assistance, please don't hesitate to contact our customer support team—we are here to help you!

4. Customs and Taxes

4.1 How are customs handled by OpenELAB for import or export?

Whether shipped from Germany or China, we cover all import duties and taxes, ensuring that you receive your package without any additional costs or hassle with customs.  

4.2 How is VAT charged when the Customer places an order from OpenELAB?

In accordance with the newest VAT e-commerce rules in the EU, OpenELAB shall have the right to charge the amount of VAT. The standard rate of actual VAT applied is subject to the European government's freedom to set the number and level. Such an amount of VAT will be charged when you place an order from OpenELAB. Please contact OpenELAB if you have any questions when you pay such VAT.  

4.3 What kind of fee will be charged except VAT?

Except for the VAT, OpenELAB will charge any handling fee when you are placing any purchase orders, which includes but is not limited to customs duty, import VAT, freight costs, etc. Customs duty and import VAT will be paid on the importation of goods from outside the EU into an EU country, and such amount is calculated as a percentage of the customs value of goods. Please note that it may take 1-2 working days for Deutsche Post/DHL/FEDEX or 3-4 working days for YunExpress for the status to update.

Effective Date: December 10, 2025

At OpenELAB, we are committed to providing accurate product descriptions and high-quality electronics. The following policy outlines your rights and obligations, designed to be fair to both our customers and our business operations globally.

1. Warranty Policy

A. Standard Limited Warranty (Global & US)

For customers in the United States, Asia, and other non-EU regions:

  • Warranty Period: OpenELAB provides a 12-month warranty from the date of delivery.

  • Coverage: This warranty covers defects in material and workmanship under normal use.

  • Resolution: We will repair or replace defective units at no charge.

B. Statutory Rights for EU/UK Customers (EU Compliance)

If you are a consumer residing in the European Union or the UK purchasing from our global site:

  • Statutory Guarantee: You are entitled to a 24-month statutory guarantee for conformity defects present at the time of delivery, in accordance with EU consumer protection laws.

  • Relation: The Standard Limited Warranty (Section 1.A) applies in addition to, and does not replace, your statutory rights.

C. Warranty Exclusions (Applies to ALL Regions)

Warranty coverage is VOID if the damage is caused by:

  1. Misuse: Incorrect installation, reverse polarity, or exceeding voltage limits.

  2. Unauthorized Modification: This explicitly includes soldering, cutting pins, modifying the PCB, or flashing unauthorized/beta firmware that "bricks" the device.

  3. Physical Damage: Drops, moisture/water damage, or electrical surges (lightning).

  4. Normal Wear & Tear: Consumable parts (e.g., batteries), unless defective upon arrival.

Note: For non-warranty repairs (e.g., customer-induced damage), we may offer repair services for a fee. Shipping and diagnostic costs will be borne by the customer.

2. Return & Refund Policy

A. Return Window

  • Standard: You may request a return within 30 days of receiving your order.

  • EU Customers: You have the statutory right to withdraw from the contract within 14 days of receipt without giving a reason.

B. Refund Conditions & Restocking Fees

To protect against policy abuse, the refund amount is strictly determined by the condition of the returned item.

1. Full Refund (100%)

  • The item is Brand New, Unopened, and Unused.

  • The original packaging is intact and sealed.

  • All accessories are present.

2. Partial Refund (Restocking Fee / Value Depreciation)
If the item is returned in a condition that prevents it from being sold as new, OpenELAB reserves the right to deduct a Restocking Fee (or "Compensation for Loss of Value" for EU customers) from the refund.
Deductions apply if:

  • Signs of Use: Visible scratches, mounting marks on screw holes, or fingerprints.

  • Damaged Packaging: Original box is torn, written on, or missing.

  • Technical Modification: The device has been powered on, programmed/flashed, or soldered.

  • Broken Seals: Anti-static bags or security seals have been opened.

Depending on the severity of the usage/damage, the deduction may range from 15% to 50% of the product price. Items damaged beyond repair due to misuse will not be refunded.

C. Shipping Costs

  • Defective / Wrong Item: OpenELAB covers the return shipping cost.

  • Customer Remorse (Changed Mind / Ordered Wrong Item): The customer is responsible for all return shipping costs to our designated return center (located in the US, Germany, or China, depending on your region). Original shipping fees are non-refundable unless required by local law.

3. Return Process (RMA)

To ensure a smooth return process, please follow these steps:

  1. Authorization: Contact us at info@openelab.io before returning any item. Returns without prior authorization will not be accepted.

  2. RMA Number: We will provide you with a Return Merchandise Authorization (RMA) number and the correct return address.

  3. Packing: Ship the item back in its original packaging with the RMA number clearly marked on the shipping label (not on the product box).

  4. Tracking: We strongly recommend using a trackable shipping method. OpenELAB is not responsible for returns lost in transit.