Welcome and buckle up! I saw that you posted another thread about some issues with your unit. Reach out to Radenso, and I’m sure they will get you headed in the right direction.
Welcome to the forum @jmmch65. I think any of us that used a Redline fell in love with it. I really hated to see the increase in BSM's render it almost extinct and way too noisy.
Welcome, you will like your Pro M, it is a small, stealthy detector with solid range. I have mine hardwired to the top of my windshield and I exclusively run it when I'm in Washington DC and Virginia where RDs are illegal. Also the Pro M is king of MRCD and MRCT, you will love it.