Description: Defend grade: GB 4208-93 IP 66 / IP 67 Call capability of phone: GB/T 15279-94 Application scope: metro, light railroad, speedway, ship, mine, etc. External configuration specification: External dimension: 320*205*120mm Weight: 5.5Kg Installment dimension:139*260mm M8 bolt is used to install. 320*205*120mm.