Battery pack / supply

A 4 x 1.5 V size 'C' battery cell holder with voltage taps for 1.5, 3.0, 4.5, 6 V. (Batteries not supplied).
 

Ideal as low d.c. voltage supply when the power from a power supply is not suitable e.g. if supplies are prone to ripple currents or if you need to work away from a power outlets.

No additional information.