2344721-3 is a ceiling mounted 4x4 MIMO WiFi antenna designed for onboard rail and public transportation applications. It features an ultra-low profile design with a diameter of 115mm and height of 30mm, and includes a built-in ground plane allowing mounting on non-conductive surfaces. The antenna operates across dual-band frequencies of 2.4/5.0 GHz with peak gain of 4dBi to 6dBi (2.4-2.5GHz) and 6dBi to 9dBi (4.9-6.0GHz), providing omni-directional coverage with 50O nominal impedance. Constructed with EN45545-2 HL1-3 compliant flame retardant materials and rated IP66, it operates reliably from -30°C to +70°C. This antenna is ideal for passenger carriages, trains, metros, buses, and trams where enhanced WiFi connectivity is required.