📄 tone_activated_relay_switch.htm
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<meta name="GENERATOR" content="Microsoft FrontPage 3.0">
<title>Tone Activated Relay Switch</title>
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<td width="100%"> <table border="0" width="100%">
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<td width="100%" bgcolor="#800000"><p align="center"><em><font color="#FFFF00"><big><strong>Signal
and Tone Activated Relay Switch</strong></big></font></em></td>
</tr>
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<table border="0" width="100%">
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<td width="100%" bgcolor="#FFFFFF"><p align="center"><img
src="Tone_activated_relay_switch.gif" tppabs="http://users.otenet.gr/~athsam/Circuits/Tone_activated_relay_switch.gif" width="736" height="323"
alt="Tone_activated_relay_switch.gif (9723 bytes)"></td>
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<td width="100%"><font FACE="Tahoma" SIZE="2"><p ALIGN="JUSTIFY">郁⌨️ 快捷键说明
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