1. Optional 4-channel or 8-channel relays for flexible adaptation to diverse scenarios.
2. Built-in CH340 chip enables one-click programming via Type-C interface.
3. Optocoupler input/output isolation ensures strong anti-interference capability and stable operation.
4. Supports Modbus protocol for compatibility with industrial automation systems.
5. Integrated RS485 and USART interfaces offer strong expandability and easy networking.
Configuration: 4-channel, 8-channel (selectable)
Power Supply: DC 9-24V / Type-C power supply
Module: ESP32 with Wi-Fi + Bluetooth
Type-C Port: Power supply and programming
EN Reset Button: Press to reset
BOOT Button: Press and hold, then press the reset button to enter download mode
Optocoupler Input: Controls relays
Serial Chip: Built-in CH340 (supports one-click programming)
Built-in: RS485 interface; supports Modbus
PCB Dimensions:
4-Channel: 93mm x 87mm; 4mm mounting holes
8-Channel: 152mm x 87mm; 3.5mm mounting holes
1x Relay Module
1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand.
2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders.
3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund.
1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase.
2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances.
3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country.
1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase.
2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse.
3. Please include your eBay ID and item number with any email requests.