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Detecting and controlling mains voltages with a Raspberry Pi or Arduino | Experiments using a Raspberry Pi and solid state relays (SSRs) to sense the presence of mains electricity and switch loads
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Raspberry Pi® RB-NETZTEIL4-B Mains PSU (fixed voltage) Compatible with (development kits): Raspberry Pi Max. output curr | Conrad.com
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Raspberry Pi X710 Power Management Board With Safe Shutdown, Wide Voltage Input(6v To 36v) For Raspberry Pi 4 Model B/pi 3b+/3b - Demo Board Accessories - AliExpress
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