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ACK E-04 AUDIO ALERT INDICATOR
MFR Model# E-04.7
ACK E-04 Audio Alert for use with ACK ELT's.
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As far as I know this replacement unit will be fine. The original was ruined by a Duracell battery leaking and totally eroding the contacts.
There was a Service Bulletin from ACK in 2019 advising owners to replace Duracell batteries because of leakage. Of course I didnâ€™t receive it.
April 13, 2021
Q: Does the Audio Alert Indicator come with the short connecting cable (Mfg P/N E-04.10.3)?
It does not, this is just the alert indicator.
Q: Does the ACK E-04 come with the battery? What type of battery is it?
No, it will not include a battery. Per the manual, they recommend a Duracell CR-2 3 volt battery.