▶Features： *Robust metal casing *Lightning proof solution *Dual power supply *Maximum convenience for centralized control   ▶Application: *Express way security protection and toll station system *City traffic monitoring system *Building and campus monitoring system *Industrial monitoring (airport, chemical plant, railway, etc.) *Military monitoring (frontier defense, national defense) *Electronic power oil field, TV station program broadcasting *Gymnasium (live video and audio transmission) *Police and safe city monitoring system ▶Product parameters： Slot Slots quantity 18 slots Compatibility(with cards) 1~4ch cards(18pcs);  8ch cards(9pcs) Flexibility Support mixed installation Power. Environmental. Mechanical Operating voltage Dual power supply, 220V/-48V Operating temperature -30℃～+75℃ Storage temperature -40℃～+85℃ MTBF ≥ 5*104 hours Dimension-standalone 485(L)*300(W)*135(H) mm,19’’ 3U Net Weight 5.12kg/piece Gross Weight(pair) 6.12kg/piece