The PowerLab hardware is a recording instrument that measures electrical input signals through its front panel. It can also generate output signals. Added hardware, such as the Finger Pulse Transducer, are front-end devices that extend the PowerLab capabilities. Some PowerLab instruments have built-in front-ends that allow simultaneous recording of up to four different biological signals (through Bio Amplifiers) and provide safe stimulation of human subjects through an Isolated Stimulator.

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