I recently purchased the Tnisesm 10 Pcs PCB Power Relay DC 5V Coil SPST 4 Pins Mini Electromagnetic PCB Relay T78-4P-5V-BK for a project I was working on. Overall, I found these relays to be decent for their price point. They were easy to install and worked as expected, but there were a few issues that brought my rating down to only 3 stars. Firstly, I found that the relays were somewhat unreliable. Occasionally, they would fail to switch on or off consistently. This was frustrating because it…