M5Stack M5Stamp PLC Controller with M5StampS3
📦 Location of the warehouse: US
Free Shipping from $50 in the US, $70 for non-continental US
- US Delivery Time: 2~7 Business days.
- Non-Continental US Delivery Time: 3~9 working days.
- 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.
M5Stack M5Stamp PLC Controller with M5StampS3
StamPLC is an IoT-enabled programmable logic controller specifically designed for industrial automation and remote monitoring tasks. At the core of this device lies the StampS3A control module, which provides strong processing power along with highly efficient wifi connectivity options. For control capabilities, StamPLC has 8 opto-isolated digital inputs and 4 relay outputs that can handle both AC and DC loads, as well as a GPIO.EXT port and two Grove interfaces to facilitate easy integration of various sensors and actuators. The device is equipped with PWR-CAN and PWR-485 interfaces, allowing it to connect seamlessly to industrial fieldbus networks for centralized control and remote data transmission.
On the human-machine interaction front, it includes a 1.14-inch color display, a RESET/BOOT button, three user buttons, and a buzzer, enabling real-time parameter adjustments and status updates while providing audible alerts for any unexpected issues. Built to endure tough industrial settings, StamPLC accommodates a wide voltage input range of DC 6–36V and is designed for DIN rail mounting for secure placement. It also includes a built-in Micro SD card slot for efficient data storage and firmware updates. Further enhancing its capabilities, the environmental monitoring system integrates an LM75BDP temperature sensor and an INA226AIDGSR voltage/current sensor for real-time operation monitoring. Additionally, the RTC (RX8130CE) module ensures precise time synchronization and log recording. The device automatically uploads data to M5’s EZDATA cloud platform, creating monitoring pages that offer users simple remote access and control through the cloud. This product is well-suited for various applications including industrial automation, remote monitoring, and smart manufacturing.
Features
- StampS3A Control Module (ESP32-S3FN8)
- EZData Cloud Monitoring
- 8 Opto-isolated Digital Inputs
- 4 Relay Outputs (AC/DC)
- 1.14-inch Color Display (ST7789v2)
- PWR-CAN & PWR-485 Interfaces
- Wide Voltage Input (DC 6–36V)
- Voltage/Current Sensor
- Internal Temperature Sensor
- User Buttons
- Micro SD Card Slot
- DIN Rail Mounting
- Buzzer
- Grove Interface
- RTC Module
- Development Platform
UIFlow 2.0
Arduino IDE
ESP-IDF
Includes
- 1 x StamPLC
- 4 x Mounting Accessories
- 4 x Screw Clip Fasteners
Applications
- Industrial Automation and Remote Control
- Distributed Control Systems
- Smart Energy Management
- Smart Manufacturing
Specifications
| Specification | Parameter |
|---|---|
| Control Module | StampS3A Control Module, based on ESP32-S3FN8, with 8MB Flash, 2.4GHz Wi-Fi |
| FLASH | 8MB |
| Digital Inputs | 8 opto-isolated digital inputs, Input voltage range: DC 5~36V |
| Digital Outputs | 4 relay outputs |
| Relays | AC – 5A @ 250V DC – 5A @ 28V |
| DC Power Supply | Supports wide voltage input of DC 6–36V @ 1A DC Power Connector: DC5521 (female, 5.5 x 2.1mm, center positive, outer negative) |
| Expansion Interfaces | GPIO.EXT interface, 2 Grove interfaces |
| Communication Interfaces | Onboard PWR-CAN and PWR-485 interfaces |
| PWR-CAN Interface | XT30(2+2)PW-M |
| PWR-485 Interface | HT3.96-4P |
| Display | 1.14-inch color display (135×240 resolution), driven by ST7789v2 chip |
| Interactive Controls | 1 RESET/BOOT button, 3 user buttons, buzzer |
| Data Storage | Built-in Micro SD card slot |
| Sensors | LM75 temperature sensor, INA226 voltage/current sensor, RTC (RX8130CE) |
| IO Port Load Capacity | 2×8 connector maximum load: DC-4.76V @ 700mA Grove port load test: DC-4.81V @ 700mA |
| Power Consumption | Standby current: (5V supply) DC-5V @ 21.60mA, (12V supply) DC-12V @ 15.22mA Operating current: (5V supply) DC-5V @ 93.89mA, (12V supply) DC-12V @ 47.84mA |
| Installation Method | DIN rail mounting |
| Operating Temperature | 0–40°C |
| Product Size | 72.0 × 80.0 × 33.4mm |
| Product Weight | 139.4g |
| Packaging Size | 102.0 x 94.0 x 37.0mm |
| Gross Weight | 163.7g |
Schematics
Pinmap
PWR-485 & PWR-CAN
| StampS3A | G42 | G43 | G0 | G39 | G46 |
|---|---|---|---|---|---|
| PWR-CAN | CAN_TX | CAN_RX | |||
| PWR-485 | RS485_TX/BOOT | RS485_RX | RS485_DIR |
RGB & User Buttons A/B/C
- Controlled via PI4IOE5V6408 (0x43)
| StampS3A | G15 | G13 | G14 | G3 |
|---|---|---|---|---|
| PI4IOE5V6408 | SCL | SDA | INT | RST |
| PI4IOE5V6408 | P6 | P5 | P4 | P2 | P1 | P0 |
|---|---|---|---|---|---|---|
| RGB | R | G | B | |||
| Button | KEYA | KEYB | KEYC |
Micro SD Card Slot
| StampS3A | G9 | G10 | G7 | G8 |
|---|---|---|---|---|
| Micro SD | MISO | CS | SCK | MOSI |
Sensor
| StampS3A | G15 | G13 | G14 |
|---|---|---|---|
| INA226AIDGSR | SCL | SDA | INT |
| LM75BDP | SCL | SDA | INT |
| RX8130CE | SCL | SDA | INT |
LCD
| StampS3A | G8 | G7 | G6 | G12 | G3 | PI4IOE5V6408_P7 |
|---|---|---|---|---|---|---|
| LCD | MOSI | SCK | RS | CS | RST | LCD_BL |
Buzzer
| StampS3A | G44 |
|---|---|
| Buzzer | BUZZER_PWM |
Relays and Optocouplers
- Controlled via AW9523B (0x59)
| StampS3A | G15 | G13 | G14 | G3 |
|---|---|---|---|---|
| AW9523B | SCL | SDA | INT | RST |
- Relay Control
| AW9523B | P0_0 | P0_1 | P0_2 | P0_3 |
|---|---|---|---|---|
| Relay | RLY_DRV1 | RLY_DRV2 | RLY_DRV3 | RLY_DRV4 |
- Optocoupler Output
| AW9523B | P0_4 | P0_5 | P0_6 | P0_7 | P1_4 | P1_5 | P1_6 | P1_7 |
|---|---|---|---|---|---|---|---|---|
| EL3H4 | SYS_IN1 | SYS_IN2 | SYS_IN3 | SYS_IN4 | SYS_IN5 | SYS_IN6 | SYS_IN7 | SYS_IN8 |
- Optocoupler Input
| EL3H4 | Description |
|---|---|
| EXCOM_IN1 | External Input Signal 1 |
| EXCOM_IN2 | External Input Signal 2 |
| EXCOM_IN3 | External Input Signal 3 |
| EXCOM_IN4 | External Input Signal 4 |
| EXCOM_IN5 | External Input Signal 5 |
| EXCOM_IN6 | External Input Signal 6 |
| EXCOM_IN7 | External Input Signal 7 |
| EXCOM_IN8 | External Input Signal 8 |
| EXCOM_COM | Common Terminal |
PORT.A & PORT.C
- PORT.A
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
| StampS3A | GND | 5V | G2 | G1 |
- PORT.C
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.C | GND | 5V | UART_TX | UART_RX |
| StampS3A | GND | 5V | G5 | G4 |
Model Size
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 Orders Inside U.S.
(For Products in the U.S. Warehouse, Shenzhen Warehouse)
2.1 Shipping options for an order value under $5 inside the U.S.
Shipping Options:
| Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
|
USPS Ground Advantage |
$9.99 Arrive in 3-7 Business Days |
$9.99 Arrive in 5-9 Business Days |
|
UPS Express |
$15.99 Arrive in 2-4 Business Days |
$19.99 Arrive in 3-7 Business Days |
2.2 Shipping options for an order value between $5 and $50 inside the U.S.
Shipping Options:
| Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
|
USPS Ground Advantage |
$5.99 Arrive in 3-7 Business Days |
$7.99 Arrive in 5-9 Business Days |
|
UPS Express |
$12.99 Arrive in 2-4 Business Days |
$15.99 Arrive in 3-7 Business Days |
2.3 Free shipping options for an order value of above $50 inside the U.S.:
| Free Shipping Options | Continental U.S. | Non-Continental U.S. |
|---|---|---|
|
USPS Ground Advantage |
Free above $50 | Free above $70 |
|
UPS Express |
+ $ 9.99 for Above $50 | + $ 12.99 for Above $50 |
Important Notice:
- Before placing your order, please check the inventory location on the product page to confirm the delivery timeframes.
- For products stored in the Shenzhen warehouse, we will ship them directly from Shenzhen, China.
- If you place an order for products from both the U.S. warehouse and the Shenzhen warehouse, we will ship your order separately: the products from the Shenzhen warehouse will be sent from Shenzhen, and the products from the U.S. warehouse will be sent from the U.S. warehouse.
3. International Warehouse
Our products are stored in both our U.S. 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 U.S. Warehouse
3.2 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 U.S. warehouse and then shipped to the final destination.
4. Customs and Taxes
4.1 How are customs handled by OpenELAB for import or export?
We aim to minimize delays and ensure compliance, but OpenELAB does not guarantee exemption from U.S. customs charges.
4.2 Are U.S. sales taxes included when the Customer places an order?
If no sales tax is charged at the time of purchase, you may still be responsible for use tax according to your state’s tax laws. OpenELAB is committed to complying with the U.S. Supreme Court's decision in South Dakota v. Wayfair, Inc. and applicable local regulations.
4.3 Are there any other fees besides tax?
Please note that international shipments to the U.S. may occasionally incur customs clearance charges or carrier-imposed fees (e.g., by DHL, FedEx, or USPS). These charges are not controlled by OpenELAB and may vary based on the delivery carrier and U.S. import classification.
Effective Date: September 16th, 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.com 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 the US.
- 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: 2.9% + $ 0.3
PayPal: 4.4%
