Beltronics Express 946 Owner's Manual - Page 5

Dim/Dark) Button: provides dim or dark settings of the  display for discreet night travel. Audio alerts are not affected by this mode. Audio Mute) Button: provides automatic and manual muting of X, K, Super Wideband Ka Radar, Laser and sws™ alerts. City/Highway) Button: minimizes unwanted X band Radar alerts without reducing sensitivity. . Antenna Opening: Radar signals are received by a patented diecast antenna with integrated transition to microstrip mixer. . Laser Optical Sensors: collect Laser signals from in front and behind. . Audio Alert Speaker: all audible alerts are emitted from this location. . External Earphone Speaker Jack: earphone speaker is connected at this location. . Power Jack: can be used to insert a power cord, making Cordless operable from your cigarette lighter socket. (See Accessories, page ) Battery Installation Cordless has been packaged with two  alkaline batteries to get you started. We advise that you use only alkaline batteries to ensure top performance. Other types may not provide sufficient power output to operate Cordless. Caution-do not leave Cordless in direct sunlight. Exposure to extreme heat can damage both the battery and unit. Warranty will be void. To install the battery: . With the unit , remove the compartment cover on the underside of the unit by pressing on the raised dots and pushing outwards. 