TTL serial port 4-way four-way relay module control board with self-locking interlock inching button to control 5V power supply

TTL serial port 4-way four-way relay module control board with self-locking interlock inching button to control 5V power supply 1005005325691887 ? Pre-Order +/- Sampai Alamat 10-15 Hari ? FREE ONGKIR+PAJAK ?? Garansi uang kembali jika Rusak, Beda Produk Type : Hand Tool Parts Origin : Mainland China modname=ckeditor model1:Four-way relay model2:Four-way relay +USB to TTL model3:Four-way relay + RF serial port +USB to TTL model4:Four relay suite +QT source code program Product information (Baidu online disk link): Link: https://pan.baidu.com/s/1Ib7CRUB3UZgatMHd9GlD9w Extraction code: ngn3 After copying this content, open Baidu Netdisk Mobile;;;, The operation is more convenient AppIf you need a USB to TTL tool, click the following link to purchase:;;;. This tool can be used to test with this board. Song typeface https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-23042275613.27.19571955cQWKdF amp;id=628435344570 Song typeface modname=ckeditor model1:Four-way relay model2:Four-way relay +USB to TTL model3:Four-way relay + RF serial port +USB to TTL model4:Four relay suite +QT source code program Product information (Baidu online disk link): Link: https://pan.baidu.com/s/1Ib7CRUB3UZgatMHd9GlD9w Extraction code: ngn3 After copying this content, open Baidu Netdisk Mobile;;;, The operation is more convenient AppIf you need a USB to TTL tool, click the following link to purchase:;;;. This tool can be used to test with this board. Song typeface https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-23042275613.27.19571955cQWKdF amp;id=628435344570 Song typeface