LT Security LTD2284HMK - Manual (Page 5)

5
1.2.2 Basic Working Parameter
Item Parameter Remark
Voltage input 19V DC 19V。
Voltage output for
camera
12V（+/-0.2） 12V，2A
Video impedance
input
75Ω 75Ω each channel。
Video output 1Vp-p 1Vp-p CVBS signal
0—2V Low voltage alarm
I/O
5V-30v High voltage alarm
RS232 serial port, for external use
RS485 Connect to PTZ, (Pelco-D，Pelco-P)
SATA HDD
Working
temperature
-10℃ - +50℃
One SATA with all capability
Under normal conditions
1.3 ENVIRONMENT ADAPTABILITY
For safety while using the DVR and to prolong device life, please pay attention to the
following details：
1) When installing device, please comply with all the electric product safety criteria；
2) Power and ground：
Do not touch the power and DVR with a wet hand
Do not drop liquid on DVR
Do not put any object on DVR
Please use soft dry cloth to clean DVR; do not use chemical impregnant.
The Device will have voltage before startup if the power line is connected to power
source.
Please unplug power line from power source if the Device will not be used for a long
time.