Let me start by saying this little box saved my off-grid cabin life. The Cudy LT500 is a rugged outdoor router that converts 4G LTE signal into WiFi, and it's been my primary internet source for months now. Setup was stupidly easy - pop in a SIM card (I'm using Mint Mobile), power it up, and boom, instant internet in the middle of nowhere.
The good stuff first: Those big detachable antennas make a HUGE difference. I'm getting 55Mbps down/36Mbps up where my phone barely gets one bar. Streaming 4K? No problem. The IP65 rating means it laughs at rain (though I did add some extra weatherproofing because... trust issues). The PoE feature is genius - I've got it mounted on a pole about 60ft from my cabin with just one Ethernet cable running power and data.
Now the not-so-great: That "500ft" WiFi range claim? Maybe in perfect conditions with zero obstacles. Realistically, expect about 40ft through walls. The included Ethernet cable is comically short (like, "why bother including it" short). And yes, the default WiFi password is literally "password" - change this immediately unless you want neighbors mooching your bandwidth.
Pro tip from painful experience: If you're using an MVNO carrier (like Mint, Cricket etc), you might need to clone a phone's IMEI to make it work properly. It's doable but annoying extra step that should be better documented.
Final verdict? For $150-ish, this is hands-down the most reliable way to get decent internet where traditional providers won't go. Just don't expect miracles from the aging Cat4 LTE tech inside - when 5G versions hit the market, I'll be first in line to upgrade.