Relays Our products have no relays inside, but most of our products have four outputs and four inputs. The output can be used to control the relay. PLC always uses RS232 or RS485, so all of our products can communicate with a PLC and microcontrollers. Marijana Matovic2022-06-17T21:06:03+07:00June 17th, 2022|2. Hardware|0 Comments Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkEmail