Home Waveshare Industrial 8-Channel ESP32-S3 WiFi Relay ETH 8DI 8RO Module RS485

Waveshare Industrial 8-Channel ESP32-S3 WiFi Relay ETH 8DI 8RO Module RS485

EU
Sale price €49,95
incl. VAT
SKU: Waveshare-30838
Port: PoE Ethernet port
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Waveshare Industrial 8-Channel ESP32-S3 WiFi Relay ETH 8DI 8RO Module RS485

Waveshare Industrial 8-Channel ESP32-S3 WiFi Relay ETH 8DI 8RO Module RS485

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.

Industrial 8-Ch ESP32-S3 WiFi Relay Module

Based on ESP32-S3, Supports WiFi / Bluetooth

Onboard Digital input, RS485, and ethernet port interfaces. Built-in protection circuits such as power isolation and optocoupler isolation, Safe & Stable & Reliable

Industrial 8-Channel ESP32-S3 WiFi Relay Module, front view
Version options
ESP32-S3-ETH-8DI-8RO

ESP32-S3-ETH-8DI-8RO
Common network port + isolated RS485
8-ch digital inputs + 8-ch relays

 
ESP32-S3-POE-ETH-8DI-8RO

ESP32-S3-POE-ETH-8DI-8RO
PoE network port + isolated RS485
8-ch digital inputs + 8-ch relays

Features

  • Based on ESP32-S3 microcontroller with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz
  • Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication, with superior RF performance
  • High quality relay, contact rating: ≤10A 250V AC / 30V DC
  • Supports passive and active digital input, with bi-directional optocoupler isolation. The relay supports digital input linkage control
  • Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors
  • Onboard pin header, allowing access to other devices
  • Onboard USB Type-C port for power supply, firmware downloading and debugging
  • Onboard power supply screw terminal, supports 7~36V wide voltage input, suitable for industrial applications
  • Onboard RTC chip, supports scheduled tasks
  • Onboard W5500 Ethernet chip for extending 10/100Mbps network port through SPI interface
  • Optional for PoE network port version, with built-in PoE module for PoE capability (compliant with IEEE 802.3af standard)
  • Onboard optocoupler isolation to prevent interference from external high-voltage circuit connected to the relay
  • Onboard digital isolation to prevent interference from external signal
  • Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal
  • Onboard TF card slot for external TF card storage of images and files
  • Built-in buzzer, RGB LED, power supply and RS485 TX/RX indicators for monitoring the operating status of the devices
  • Rail-mounted ABS case, easy to install, safe to use

Specifications

Version ESP32-S3-POE-ETH-8DI-8RO ESP32-S3-POE-ETH-8DI-8RO-C
Microcontroller ESP32-S3 (Default module: ESP32-S3-WROOM-1U-N16R8, customizable for other modules)
Wireless communicatoin 2.4GHz WiFi (802.11 b/g/n)、Bluetooth 5, BLE
USB Connector USB Type-C
Power supply 5V
Functions Power supply, USB communication, firmware downloading, etc.
isolated comm interface Interface RS485 CAN
Connector Screw terminal
Direction control Hardware automatic control
Protection TVS diode, surge protection & ESD protection
Resistor Onboard reserved 120R matching resistor, NC by default, enabled via jumper
Ethernet interface PoE Ethernet port, supports IEEE 802.3af standard (for PoE port version only)
Digital input Input channels 8
Input voltage 5V~36V
Input type Passive input / active input (NPN or PNP type)
Isolation type Bi-directional optocoupler isolation
Relay Contact rating ≤10A 250V AC / 30V DC
Relay channels 8
Contact form 1NO 1NC
Isolation Optocoupler isolation
LED indicators RGB RGB colorful LED, supports programmable control of display color
PWR Red power indicator, lights up when there is USB connection and voltage is detected
TXD Green TX indicator, lights up when the RS485/CAN port sends data
RXD Blue RX indicator, lights up when the device port sends data back
power supply Screw terminal Voltage range 7~36V
Appearance Enclosure Rail-mount ABS protective case
Dimensions 175 × 90 × 40 (mm)


Based on ESP32-S3, Designed
for AIoT market

Equipped with Xtensa 32-bit LX7 dual-core processor, capable of running at 240 MHz, with Powerful AI Computing Performance and Security Encryption Mechanism; Integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication

Industrial 8-Channel ESP32-S3 WiFi Relay Module, built-in ESP32-S3
Onboard multiple isolation protection circuits

Multiple protections, more safe and reliable

Industrial 8-Channel ESP32-S3 WiFi Relay Module, multiple isolation protection circuits
supports RS485 and Bluetooth / WIFi remote control

Onboard 8-ch relays and 8-ch digital inputs
Contact rating of the onboard relay up to 10A 250V AC / 30V DC
Directly controlling 220VAC home appliances, or devices below 30V DC

Industrial 8-Channel ESP32-S3 WiFi Relay Module, AC / DC connection demo

Digital input

Supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation

Industrial 8-Channel ESP32-S3 WiFi Relay Module, digital input connection

Application scenarios
Industrial 8-Channel ESP32-S3 WiFi Relay Module, linkage control demo


Supports Arduino IDE

Comprehensive SDK, Dev Resources, And Tutorials To Help You Easily Get Started




Optional for PoE function

built-in PoE module, providing both network connection and power supply in one cable

Industrial 8-Channel ESP32-S3 WiFi Relay Module, built-in PoE module

* the PoE function is only available on ESP32-S3-POE-ETH-8DI-8RO version, and the switch shown in the picture is NOT included.


Application Examples

Provides Multiple Networking Demos With Waveshare.Cloud, Using The Lightweight
MQTT Protocol To Achieve Data Visualization Service

Industrial 8-Channel ESP32-S3 WiFi Relay Module, application examples
What's On Board
Industrial 8-Channel ESP32-S3 WiFi Relay Module, PCB front view
  1. ESP32-S3-WROOM-1U-N16R8
    Adopts ESP32-S3 series chip with Xtensa 32-bit LX7 dual-core processor, built in 16MB Flash and 8MB PSRAM
  2. 8-channel quality relays
    contact rating per channel: ≤ 10A 250V AC or ≤ 10A 30V DC
  3. Optocoupler isolation
    prevents interference from external high-voltage circuit connected to the relay
  4. RESET button
  5. PoE header
    supports connecting to PoE module for PoE capability (for PoE port version only)
  6. BOOT button
  7. Power IC
  8. Digital isolation
    prevents interference from external signal
  9. Power supply isolation
    provides stable isolated voltage, needs no extra power supply for the isolated terminal
  10. Bi-directional optocoupler isolation
  11. RTC battery holder
  12. Buzzer
  13. Digital input screw terminal
  1. Pin header
    for connecting other devices
  2. LED indicators
    PWR: power indicator
    RXD: RS485 RX indicator
    TXD: RS485 TX indicator
  3. USB Type-C connector
    for module power supply, firmware downloading and USB communication
  4. WS2812 RGB LED
    controllable via GPIO38
  5. Ethernet port
  6. External antenna connector
    SMA female connector, for WiFi and Bluetooth wireless communication
  7. Power supply screw terminal
    supports DC 7~36V wide voltage input
  8. RS485 comm interface
    for connecting to external RS485 devices
  9. RS485 matching resistor jumper
    onboard reserved 120R matching resistor, enabled via jumper
  10. Relay screw terminals

Industrial 8-Channel ESP32-S3 WiFi Relay Module, PCB back view

- 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 addresses must be entered in English without special symbols to help the courier company recognize your address in the system. We will ship strictly 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 after 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.

🚀 Need Faster Shipping?

If you require expedited shipping (Express), please contact our customer support team at info@openelab.io for a customized quote tailored to your location.

2. Shipping Rates & Options

Our shipping rates are calculated based on the order value and destination. Please refer to the tables below for details.

2.1 Germany (Domestic)

Shipping Method Order Value Cost Est. Delivery
Deutsche Post €0 - €50.00 €4.95 2-4 Business Days
Deutsche Post Over €50.00 Free 2-4 Business Days
DHL Paket
(Faster Delivery)
€0 - €50.00 €6.95 1-3 Business Days
DHL Paket
(Faster Delivery)
€50.00 - €100.00 €2.00 1-3 Business Days
DHL Paket
(Faster Delivery)
Over €100.00 Free 1-3 Business Days

2.2 European Union (EU)*

*Including:

Åland Islands, Andorra, Austria, Belgium, Bosnia & Herzegovina, Bulgaria, Croatia, Czechia, Denmark, Estonia, Faroe Islands, Finland, France, Gibraltar, Greece, Guernsey, Hungary, Ireland, Isle of Man, Italy, Jersey, Latvia, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard & Jan Mayen, Sweden.*
Shipping Method Order Value Cost Est. Delivery
Deutsche Post €0 - €100.00 €7.95 5-9 Business Days
Deutsche Post Over €100.00 Free 5-9 Business Days
DHL Paket
(Faster Delivery)
€0 - €100.00 €15.95 3-7 Business Days
DHL Paket
(Faster Delivery)
€100.00 - €250.00 €7.95 3-7 Business Days
DHL Paket
(Faster Delivery)
Over €250.00 Free 3-7 Business Days

2.3 United States

Region Shipping Method Order Value Cost Est. Delivery
Continental U.S.
(50 States)
USPS Ground Advantage €0 - €45.00 €4.95 3-7 Business Days
USPS Ground Advantage Over €45.00 Free 3-7 Business Days
USPS Priority Mail €0 - €45.00 €16.95 1-4 Business Days
USPS Priority Mail Over €45.00 €14.95 1-4 Business Days
Non-Continental U.S.
(AK, HI, PR, etc.)
USPS Ground Advantage €0 - €60.00 €6.95 5-9 Business Days
USPS Ground Advantage Over €60.00 Free 5-9 Business Days

* 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, and all U.S. Armed Forces addresses. The shipping and delivery to these areas are subject to the Non-Continental U.S. shipping rules.

2.4 International (Outside EU)

For specific international destinations, including Switzerland, United Kingdom, and Norway.

Order Amount Shipping Cost
€0 - €300.00 €19.95
Over €300.00 Free

Important Notice:

  • Inventory Status: Please check the inventory status on the product page. Our system displays real-time stock for our Munich and Long Beach warehouses. If an item is out of stock in these locations, it will be marked as "Pre-order". You can still place an order for these items.
  • Pre-order Fulfillment: For "Pre-order" items, we arrange the most efficient logistics solution to ensure you receive your goods as quickly as possible. Your package may be shipped directly from our Shenzhen warehouse. Alternatively, as part of our standard restocking process, we may transport the goods to our Munich or Long Beach warehouse first (typically taking 5-10 business days) before dispatching them to you.
  • Split Shipments: If your order contains both in-stock and Pre-order items, we will prioritize shipping the in-stock items from the local warehouse immediately. The remaining Pre-order items will be sent to you in a separate shipment once they are ready.

3. International Warehouse

Our products are stored in our Munich, Long Beach, 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

For Pre-order items or orders fulfilled directly from our Shenzhen warehouse, we utilize YunExpress for reliable international shipping. 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, products will be restocked to our Munich or US warehouses before final delivery, as detailed in the "Important Notice" above.

4. Customs and Taxes

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

For EU Member States: Whether shipped from Germany or China, we cover all import duties and taxes (DDP), ensuring that you receive your package without any additional costs or hassle with customs.

Important Exception for Non-EU Countries (e.g., Switzerland, Norway):
For countries outside of the European Union, such as Switzerland and Norway, you may be subject to import duties, taxes, and/or customs fees charged upon delivery. These fees vary from country to country and are the sole responsibility of the recipient.

⚠️ Refusal of Delivery: If you refuse to pay these fees upon delivery and the package is returned to us, the refund amount will be calculated after deducting the original shipping costs, return shipping costs, and any applicable customs or storage fees.

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 at checkout. The standard rate of actual VAT applied is subject to the destination country's regulations. No additional VAT will be charged upon delivery for these orders.

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.