What make of alarm?

Hi, our new home has this alarm and it don't say what it is on either the main box or keypad.The keypad has green screen and displays the words battery fault and 2010 date.It don't do anything when I press any of the buttons,I've looked around the house and it has only 3 infra red sensors that light up red when they see me.there's no instructions for it so I don't know what manual to order.please help.