Såg den nyss på Tunzes hemsida Other power supply units for Turbelle® 6101, 6201 and 6301 - safety connector. Turbelle® stream 6101, 6201 and 6301 are pumps with an electronic motor. Thus, they can be operated on any direct-current source (battery, solar cells) from 10 V to 24 V. For a safe connection to the pump, we recommend the Turbelle® Safety Connector 6105.50, which contains a 4 amps fuse. The safety connector permits normal operation with the TUNZE® power supply unit, but in case of a power failure it will automatically switch over to a car battery or a direct-current source.