User manual SENNHEISER HDI 405 P2

[. . . ] Fluorescent tubes and digital controls do not use this frequency range. Lightweight and extremely comfortable to wear - the receiver weighs only 45 g, including the rechargeable accupack!ACCUPACK OPERATION When the accupack becomes weak (noise interference and sound distortion are sure signs of a weak accupack), switch off the receiver and recharge the accupack. (If necessary, use a second accupack to listen while the first accupack is being recharged. [. . . ] ) Recharge the accupack immediately when it is flat. If the accupack is flat but is left in the switched on receiver, this reduces the service life of the accupack ("total discharge"). As far as possible, use the full capacity of an accupack before you recharge it. Frequent short discharge and recharge cycles prematurely reduce its charging capacity. CHARGING THE ACCUPACKS The stethoset receivers are powered by BA 151 accupacks which can be recharged either separately or in the receivers. depending on the application , there are different possibilities for recharging the accupacks. The BA 151 can be recharged in the Set 250 and Set 500 transmitters, in the L 151 charger (suitable for charging two individual accupacks) or in the L 151-10 charging unit. For commercial use, Sennheiser offers charging and transport/storage units for recharging a larger number of stethoset receivers at a time. The BA 151 accupack must be charged for 24 hours before first use!Please first check whether your hearing aid is designed for use with an induction loop. Alternatively, the EZI 120 induction coupler can be connected by means of the KA-1K connection cable. Your Sennheiser dealer will be happy to provide you with information on binaural solutions. CHANNEL SELECTOR SWITCH ON THE HDI 405 P2 The HDI 405 P2 stethoset receiver features a channel selector switch which lets you choose between the following options: With the switch set to position "", a stereo signal is received (channel 1 right, channel 2 left). With the switch set to position "I", only the signal from channel 1 is received (carrier frequency 2. This mono signal is supplied to both headphone systems. With the switch set to position "II", only the signal from channel 2 is received (carrier frequency 2. This mono signal is supplied to both headphone systems. The ear-cushions can easily be removed from the headphones and cleaned with warm soapy water. [. . . ] The ear-cushions can easily be removed from the headphones and cleaned with warm soapy water. From time to time, however, the ear-cushions should be replaced for reasons of hygiene. Replacement ear-cushions are available with different degrees of softness: Black ear-cushions, firmer version White ear-cushions, softer version EP1 Cat. Please order your ear-cushions from your Sennheiser dealer. [. . . ]