KMtronic Ltd: Raspberry Pi DIY Home Automation Starter Kit - USB Relay
GitHub - donatmarko/kmtronic-usb-relaybox-mqtt: Python3 middleware for KMTronic USB 8 channel relay boxes to control the relays remotely with MQTT messages.
რელე KMTronic Two Channel USB Relay | MS Solutions - სკოლის მენეჯმენტის სისტემა