audio matrix switcher with following features:

- Microcomputer modularization,high density matrix design
- Max. 1024 channel input,128 channel output
- Based on ethernet ,no need external equipment
- Intelligent network equipment management function
- Built-in CPU module
- Support double CPU warm standby switch control system, support system power supply warm standby
- Composite menu setting
- Password protection,prevent unauthorized persons operate
- Priority operation.
- System partition with different keyboard access priority
- Parallel / group switch
- Universal patrol / display sequence
- Screen display: camera No. title; changeable date/time format, monitor No. and status
- 64 groups switch automatically,synchronously
- Classification, multi-grade control
- Camera hence control?control constant-speed or change-speed tripod
- Alarm transfer automatically
- Inside video lost check- synchronous check
- Program alarm contact sheet
- 5 different alarm display ,3 alarm disarming methods
- 35 timing transfer time,
- Spare battery protection for all program data
- 8 RS-232 communication ports(scalable to 32 )
- Optional LH50-83DM macro keyboard ,have following functions:
- Support 5000 macro instruction operation,multiple complicated operation done by one button
- Virtual camera No.
- Support putting macro instruction with different function in group.
- Support composite control of matrix,frame processor, hard Disk Video Recorder,decoder and dome camera
- 1280 multi-brand matrix virtual network via LH40-38X-16
- Classification authority management : view, control, alarm response.