Warehouse Wi-Fi is Possible Without External Antennas!

The proper Wi-Fi design in warehouse environments should include labor-intensive external antenna-based designs. However, with the help of some internal down-tilt/omni antenna APs, it's possible to design warehouses even with 25-30 meter-high ceilings. Yes, no need for external APs. I'll show some real-world experiments and some real data recorded in real warehouses, and also some open-air experiments proving my claims.