A few weeks ago, I ordered a relay tester. Never had one, always wanted one. Whenever I doubt the proper functioning of a ...

(MENAFN- GetNews) A relay module is a small electronic device that allows low-power signals to control high-power equipment. It works as a bridge between a control system-such as a PLC, Arduino, or ...

Three-and-a-half-tonne dropside trucks are enjoying a bit of a halcyon period at the moment. It’s as a result of the old 7.5-tonne sector going into freefall because of all the legal restrictions on ...

I once new a way of checking for an open relay by telneting into port 25 on the smtp server. I have since forgotten. Can anyone reffresh my memory as I dont want to leave my mail server open to ...