Scantronic 9450 problem?

The PIR's are lit constantly and appear to be pulsing along with a hum from the main panel. Any suggestions?
Paul, November 2012


done
How do I re-arm zone 1,2,3 the sensors (3 of remain on permanently)

S pengilly, January 2014
:) indeed :)

e manno, November 2012
unlike the dross they sell now a days and you know what am talking about guys

gts, November 2012
There you go gts,yet another great panel popping up with only the need of a battery replacement,

Built to last :)

e manno, November 2012
yup e manno,we still got some on maint.contracs they just go on and on,

gts, November 2012
Awwww that's an old three zone :)

e manno, November 2012
Battery

Alarm, November 2012
link Click here to see other fixes for Scantronic 9450.