Remote Touch Tone Controller

Electronic Appliance Control by a Phone Call (DTMF)

Remote Touch Tone Controller

($2 for 10 PCBs & $6 for stencil: https://jlcpcb.com #1# cm8870 ic #2# um 2003 ic #3# led green red and yellow #4# screw terminal #5# 7805 regulator ic #6# 2.2k resistor #7# 300k resistor #8# 27 pf #9# 104 pf #10# 100k resistor #11# 4007 diode #12# 3.58 Mhz crystal oscillator #13#...

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