[RC232] I would like to know how to use the pins N°27 and 28 on the RC2500HP Pin 27 and 28 must be left open. Last Update: August 8, 2017 December 20, 2016 2519 RC232 Q&A Related Knowledge Base Posts -[RC232] In a point to multi point scenario, (host with clients) can the host see the received signal levels of the clients when they transmit data?[RC232] How can we make a repeater? Do you have a model or we could do it with two modules?[RC232] Are the Settings made during Configuration persistent, or do these settings need to be made each time the device is powered on ?