Eppendorf 3100 Digital Water Bath Shake - Manual (Page 10)

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Figure 2: Rear View
2.2 Universal Power Capability
A voltage selector switch is used to select the appropriate voltage. This universal
system adapts to worldwide power requirements. Voltage has been set prior to
shipment. Innova shakers are available in 100V, 120V, 220V and 240V versions, and
accommodate both 50 and 60 Hz frequencies.
WARNING!
It is critical that you check the voltage settings before
you plug the unit into a power source. See Section 3.2.