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The 411A (Eveready 411 or BLR121) is an Alkaline replacement for the once-popular Carbon Zinc battery that was commonly used in AVO meters. Being Alkaline, the 411A replacement will last longer than the original. It is widely used in vintage collectible transistor radios and in the early model 8 AVO meters, such as the Mk III AVO meter. Specifications:
Also Known As: 10F20, 208, 411, 411A, A411, B121, BA 331/U, BLR-121, BLR121, K10, M121, U10, VS082