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Power Supply: Carbon-zinc battery (9 V, 6F22) or Alkaline battery (9 V, 6LR61)
AC adaptor: (PSA series: sold separately)
Current Draw: 15 mA
Expected battery life under continuous use: Carbon: Approx. 25.5 hours, Alkaline: Approx. 42 hours
*These figures will vary depending on the actual conditions of use.
Options (sold separately): AC adaptor: PSA series
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