Whelen Engineering Company, Control Systems, models:

CanTrol	Installation & Operating Manual
CanTrol Basic with Traffic Advisor	Installation & Operating Manual
CanTrol WC	Installation & Operating Manual
CenCom Sapphire	Installation Manual
Core R C399R	Manual
PCCS9N	Installation Manual
PCCS9R	Installation Manual
Traffic Advisor TACTLD1	Installation And Operating Manual