4ch IoT relay board w power metering Teardown of a 4ch #IoT relay board w/ power metering. Lack of galvanic isolation + narrow shared 40A live PCB trace makes me raise brows View on X → Share this: Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Share on Reddit (Opens in new window) Reddit Share on Facebook (Opens in new window) Facebook More Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram Share on X (Opens in new window) X By Martin | September 17, 2017 | X post | ← Certification for the bboil IoT thermostat project Security, Big Data and other challenges to the IoT →