Security Alarm System

Dimension:
Host: 26.6cmx26.3cmx7.5cm(widthxheightxthickness),the lock and connector, down-lead
ferrule are excluded
Keypad(including the card):13.1cm?0.6cm?cm
Weight: Host(including the battery): about 2.8kg 
Keypad(including the card): about 0.25kg
Battery:AC220V  50Hz
Storage Battery:DC12V4Ah pressurized lead-acerbity battery (dismaintained)     
Working Current: <110mA(usual) keypad included,
alarming current<350mA(the external siren are excluded)
Keypad Current(including the card):
<60mA (ARM); <37mA(DISARM)
Output power: DC 12V  1500mA
Wireless receive:315M(433M optional)
Study the codes automatically
Wired zones: 8 optional armed zone  
Loop time: 200uS
Air pressure(86-106)kpa
Telephone line requirement: audio-frequency
Sound recorded: 8-20secs(optiona)
It will not be protected if no power.
The maximum distance between the keypad and host(m)
Connection:4wires(black,red yellow,green are suggested)