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Rolson Battery Bulb and Fuse Tester.
Checks power level of most 1.5V and 9V batteries• Checks most fuses and bulbs• Supplied with a 9V battery (Order Code:?L46AL for replacements)
Please note the 9V battery is only required when testing fuses in the unit. Batteries are tested using their own power, and do not draw power from the 9V battery.