520 defense area protection wired intelligence alarm system(hotel,estate)

520 protective area, connect 8 keyboard intelligence alarm system

The intelligence alarm system technical parameters:
 AC16.5V input powerl
l motherboard static power consumption 300mA
l850mA alarm status 
l DC13.8V output power
 DC9V communications interface to the 24V power inputl
 Alarm output DC14V 800mAl
 Size 264 x 217 x 46mml
 keyboard portl bus shall not be greater than the total length of 1200m
 communication portl for each interface the total length of bus shall not be greater than 1200m, the two interfaces can be up to 2400m

Configuration list:

1. Host one (including antenna): 1 pc

2. The keyboard : 1 pc

3. A remote control

 4. Manual 1

5. A warranty card