Just a few months back, Wireless-Tag released the WT99P4C5-S1, which combines the ESP32-P4 with an ESP32-C5 dual-band WiFi 6 module, instead of the more commonly used ESP32-C6 wireless module found on ...
So you want to control some mains electrical (or lower voltage) item using your phone, perhaps? This single ESP8266 plug-in controls a relay that is built in to the module. An Android app (.apk) ...
OpenHPSDR P.A. Antenna switch board by LA2NI (Munin 400/Aries system) This relay board is part of a set consisting of a 400 W LDMos based RF power amplifier (Munin 400), a medium power (600 or 1500 W) ...