(The SA520B is described on some websites as a battery unit, but it has a way on the back to wire it in, which is what you’d ...
in connection with this detector. The battery polarizes the electrolytic cell, that is, the fine platinum wire is. covered with tiny bubbles of oxygen and then the resistance rises so high that ...
The new battery-only detector should include “wireless interconnect ... but it has a way on the back to wire it in, which is what you’d need to do, after you turn off power at the circuit ...
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