| Brand | Unbranded |
|---|---|
| UPC | 7772195352839 |
Check the listing for details. Relay Module 4 M Byte Flash Programmable Keys Relay Module For Secondar. Condition: New. Listed at 16.32 USD. Mature and Stable Module: This module supports I/O port as well as UART program download port all pinout, programmable keys and reset keys, mature and stable. Large Capacity: This dual relay module has a large enough capacity of 4M, you can use it with the actual situation.