| select | 4ch+shell |
|---|---|
| Brand | Unbranded |
| Type | relay Optocoupler Isolation Module |
| Marke | Markenlos |
Check the listing for details. 4/8-Channel ESP32 RS485 Modbus WIFI Bluetooth Relay Optocoupler Isolation Module. Condition: New. Listed at 18.80 USD. Module: ESP32 with Wi-Fi + Bluetooth. Optocoupler input/output isolation ensures strong anti-interference capability and stable operation. Supports Modbus protocol for compatibility with industrial automation systems.
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