37 REPAIR, INSTALLATION AND MAINTENANCE OF WATER AND CONSUMPTION MEASUREMENT AND ROOM CONTROL EQUIPMENT AND SYSTEMS, NAMELY, WATER METERS, HEATMETERS, HEATING COST ALLOCATORS, WIRELESS DATA TRANSMISSION MODULES, RADIO TRANSMITTERS AND RADIO RECEIVERS FOR READING OF ELECTRICITY, HEAT, WATER AND GAS METERS, DATA BUSSES, AND SYSTEMS FOR THE CONTROL OF TEMPERATURE, HUMIDITY, LIGHTING, AND BLINDS, COMPRISED OF REGULATORS, COMPUTER CONTROL STATIONS,TEMPERATURE SENSORS, RADIO TRANSMITTERS AND RECEIVERS; REPAIR INSTALLATION AND MAINTENANCE IN THE FIELD OF COMMUNICATIONS TECHNOLOGY FOR HOUSEHOLD AND DOMESTIC APPLIANCES, NAMELY, REPAIR, INSTALLATION AND MAINTENANCE OF COMPUTERS AND REMOTE CONTROLS FOR MAN-MACHINE INTERFACES FOR CONTROLLING HOUSEHOLD AND DOMESTIC APPLIANCES, INTRUSION AND FIRE DETECTORS FOR VARIOUS HAZARD STATES, PRESENCE SENSORS, AND TRANSMITTERS, RECEIVERS, AND TELEPHONES FOR CALLING ASSISTANCE IN EMERGENCIES