giving audible indications

Full Title

Control or safety arrangements > characterised by user interfaces or communication > Indication arrangements, e.g. displays > giving audible indications

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

HEATING; RANGES; VENTILATING

Subclass:

AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING