[. . . ] ­ Protect the device against humidity, water and other liquids. If the device should have been exposed to water, humidity or other liquids, do not use it since it may lead to damages of the device and to injuries from electrical shock or explosion. ­ Do not expose the device to extreme heat sources, such as direct sunlight. This can cause explosions as well as reduce the performance and/or service life of the battery. [. . . ] Registering (pairing) and connecting with the cell phone Before you can use the BT Drive Free 411, you must register and connect it with a Bluetooth-ready cell phone. Registering is a one-time process and required only for the first connection with the cell phone. The BT Drive Free 411 can be registered with up to eight cell phones and be connected simultaneously with two cell phones. ­ Hold the BT Drive Free 411 within range of a Bluetooth-ready cell phone; the distance should not exceed a metre. 6 seconds until you hear a low-pitched signal tone and the MF button intermittently flashes red and blue. ­ Activate the Bluetooth function of the cell phone and start the search for Bluetooth devices. (For further details, please read the operating instructions of your cell phone). ­ From the list of devices found, select the "BT DF 411". ­ If required, enter the PIN code "0000" and confirm the entry. If the pairing process was successful, you hear a signal tone and the MF button lights blue for 3 seconds. ) ­ After registering, the BT Drive Free 411 automatically connects with the cell phone. Next, the BT Drive Free 411 changes to standby mode and the MF button flashes blue every 3 seconds. Note: If the registering is not completed within 2 minutes, the BT Drive Free 411 switches off again. 8 Multi-connection function The multi-connection function allows the simultaneous use of the BT Drive Free 411 with two cell phones. This is advantageous for users with a personal and a business cell phone. Establishing a connection with two cell phones There are several options of connecting the BT Drive Free 411 with already registered cell phones. ­ Automatic connection When switching on the BT Drive Free 411, a connection is automatically established with the two most recently connected cell phones. ­ Establishing a connection via the BT Drive Free 411 To manually establish a connection between the BT Drive Free 411 and the two most recently connected cell phones, press the MF button. The BT Drive Free 411 first connects itself with the most recently connected cell phone. ­ Establishing a connection via the cell phone If the cell phone is not one of the two most recently connected cell phones with the BT Drive Free 411, you have to establish the connection via the Bluetooth menu of the cell phone. After successful connection, you can establish another connection with a second cell phone. If two cell phones are connected with the BT Drive Free 411, the cell phone connected first is the first device and the other one the second device. [. . . ] ­ The BT Drive Free 411 must be switched on and no connection may exist to a cell phone. ­ Press and hold down the "+" and "­" buttons simultaneously for approx. 10 seconds until the MF button intermittently flashes lights red and blue. ­ If the registration list was deleted, the MF button stops flashing intermittently. [. . . ]