V

ENVIRONMENT AND BUILDING CONTROL SYSTEMS, NAMELY, CLOSED CIRCUIT TELEVISION RECEIVERS; APPARATUS AND INSTRUMENTS FOR CONTROL OF CLOSED CIRCUIT TELEVISION APPARATUS; COMPUTERS AND COMPUTER SOFTWARE FOR CONTROL OF THE MONITORING SYSTEMS FOR SECURITY PURPOSES; SIGNAL SWITCHING APPARATUS FOR SECURITY PURPOSES; PASSIVE INFRARED DETECTOR APPARATUS AND INSTRUMENTS; BELL BOXES; ALARMS; SOUNDERS; MODEMS FOR SECURITY PURPOSES; CONTROL PANELS FOR SECURITY PURPOSES