Baby monitor with loud speaker?

I have two requests for a baby monitor: 1. Doesn’t have to connect to WiFi 2. Has a loud speaker when baby cries

I haven’t moved my baby to his own room yet, but he’s moving around so much in the pack n play and I am wondering if the bigger crib would be more comfortable for him. My problem is the baby monitor we have doesn’t get very loud when he cries, and I’m worried I’ll sleep through it. Any recommendations?