ruiskv

Hi I have installed a Visonic Powermaster 30 and an LCD keypad KP250 I read in some KP-250 documents a reference to "Input Voltage (V DC) - 12" under "Power Description" section. The electronics board in fact shows "DC IN" next to a 2 pin JST H2 connector. I was wondering if: the lcd keypad can in fact be powered up from an external power source? if affirmative, what is the connector pinout (positive and negative pins)? and voltage to apply is the stated 12v? thanks in advance r.