2 of 2comwave business care | businesscare@comwave.net | 1-866-500-4107Important InformationEnvironmentKeep the phone and base away from heating appliances and devices that generate electrical noise such asfluorescent lamps and motors. These noise sources can interfere with performance.Do not place the phone or base in rooms where the temperature is less than 0 °C (32 °F) or greater than 40 °C (104 °F).The range of operation depends on the topography of your office, weather, or usage conditions as signals aretransmitted between the base unit and the handset/desk phone by radio waves. If there are obstacles such aswalls, noise may interfere with your telephone calls. In particular, high metal shelves or reinforced concrete wallswill restrict operating range.A handset / desk phone may not work when it is too far from the base unit depending on the structure of the building.