Waveshare ESP32‑S3 WiFi/BLE Relay 6CH | RS485 | DIN‑Rail, Isolated
📦 Location of the warehouse: China
🚚 We will ship your order within 1-3 working days after the order is taken.
Free Shipping from 30€ in Germany, 50€ in the EU!
- EU & US Countries Delivery Time: 5~10 working days.
- Other Countries Delivery Time: 2~2.5 weeks.
- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished. For specific delivery times, please feel free to contact us for inquiries.
- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.
Waveshare ESP32‑S3 WiFi/BLE Relay 6CH | RS485 | DIN‑Rail, Isolated
An industrial‑grade relay control module powered by the ESP32‑S3 dual‑core MCU, integrating Wi‑Fi, Bluetooth LE, and isolated RS485 interfaces for versatile connectivity. It comes with multiple isolation protection circuits, a 35 mm DIN‑rail ABS enclosure, and expansion compatibility via a Raspberry Pi Pico HAT interface. Ideal for industrial automation, smart home control, and IoT applications where safety and reliability are key.
Key Features
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High‑Performance MCU — ESP32‑S3, Xtensa® 32‑bit LX7 dual‑core @ 240 MHz with AI computing capabilities and encryption.
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Wireless & Wired Connectivity — Integrated 2.4 GHz Wi‑Fi + Bluetooth 5 LE; onboard isolated RS485 port.
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6 Quality Relays — Contact rating ≤ 10 A 250 VAC / 30 V DC; direct control of high‑voltage appliances or DC loads.
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Industrial‑Grade Isolation — Power isolation, optocoupler isolation, and digital signal isolation for enhanced safety.
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Pico HAT Expansion — 40‑pin header compatible with Raspberry Pi Pico HATs (add RTC, CAN, RS232, LoRa, sensors, etc.).
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Robust Protection — TVS diodes, surge suppression, ESD protection, and onboard matching resistor (enable via jumper).
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User Indicators — RGB LED, power indicator, RS485 TX/RX LEDs, and onboard buzzer for status feedback.
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Flexible Power Input — USB‑C or 7–36 V DC via screw terminal; onboard isolated power output for RS485 devices.
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Compact DIN‑Rail Enclosure — ABS case for safe, easy installation.
Specifications
| Parameter | Details |
|---|---|
| MCU | ESP32‑S3‑WROOM‑1U‑N16 (16 MB Flash, customizable) |
| Wireless | Wi‑Fi 802.11 b/g/n, Bluetooth 5 LE |
| Relay Channels | 6×, 1NO/1NC, ≤ 10 A 250 VAC / 30 V DC |
| Interfaces | Isolated RS485, 40‑pin Pico HAT header |
| Protection | Optocoupler, digital, power isolation; TVS diode; surge suppression |
| Power Supply | USB Type‑C or DC 7–36 V |
| Indicators | RGB LED (GPIO38), PWR (red), TX (green), RX (blue) |
| Extras | Passive buzzer (GPIO21), antenna connector (SMA) |
| Enclosure | ABS, DIN‑rail mount |
| Dimensions | 145 × 90 × 40 mm |
Onboard multiple isolation protection circuit
Multiple protections, more safe and reliable
High quality 6-Ch relays, supports RS485 and Bluetooth / WIFi remote control
Contact rating of the onboard relay up to 10A 250VAC/30VDC
Directly controlling 220VAC home appliances, or devices below 30VDC
Onboard Pico HAT compatible interface and RS485 interface for easy expansion
Onboard isolated RS485 interface, for connecting to various RS485 Modbus industrial modules or sensors. Onboard 40PIN header compatible with some Raspberry Pi Pico HAT, for expanding more functions such as RTC / CAN / RS232 / LoRa / sensor, etc.
Applications
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Industrial equipment control and monitoring
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Home and building automation
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Remote IoT relay switching via Wi‑Fi / Bluetooth / RS485
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Sensor‑triggered relay control with full electrical isolation
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Integration with Arduino, MicroPython, ESPHome, Home Assistant, and custom firmware
Package Contents
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1× Waveshare ESP32‑S3 6CH WiFi Relay Module
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1× ABS DIN‑rail mount enclosure (pre‑installed)
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1× Wi‑Fi/Bluetooth antenna
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1× Screw terminal connectors set
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1× Quick start guide
Size
1. General Shipping Information
- We provide premium shipping methods with a tracking number for each order.
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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.
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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.
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We can ship all in-stock orders within 1 business day as your order has been confirmed.
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All items are inspected before dispatch and are carefully hand-packed.
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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 Shipping options for an order value of up to €30 inside Germany, €50 inside the EU* or €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 |
2.2 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 |
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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.
2.3 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
3.1 German Warehouse
3.2 US Warehouse
3.3 Chinese Warehouse
4. Customs and Taxes
4.1 How are customs handled by OpenELAB for import or export?
4.2 How is VAT charged when the Customer places an order from OpenELAB?
4.3 What kind of fee will be charged except VAT?
Effective Date: August 7, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 30 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- If a return is requested due to customer reasons (e.g., change of mind, incorrect order, etc.), both the original shipping cost and the return shipping cost will be deducted from the refund amount.
- For returns due to customer reasons, we will generate and provide a return shipping label.
Payment Platform Fees
For all refunds requested due to customer reasons, a standard service fee will be deducted from the refund amount, which is charged by the payment platforms. The specific fees are as follows:
Shopify Payments: 1.8% + €0.3
PayPal: 4.4%
