Agreed, I have the ACK-04 too. I takes 3 batteries to do what the main battery does with the Artex-345. My remote switch "10 year" battery died after 5 years. I have had one false activation. The phone extension cable got upgraded with a shielded cable to reduce the possibility of another false activation, whereas the ACK-345 can be wired with shielded wire on the provided connectors.