Shelly's Duo GU10 RGBW smart lightbulb can be easily installed and configured in minutes, compatible with standard GU10 downlight fittings and offering white and coloured dimmable lighting. The lightbulb can either be controlled and fine-tuned manually from the free Shelly mobile app, or incorporated into a wider smart scene of schedule involving multiple Shelly-connected devices like heating, motorised blinds and windows. The Duo GU10 RGBW features precise power monitoring to within 1% accuracy, and supports both 110V and 220V power supplies. It's also broadly compatible, working with Android, iOS, Amazon Alexa, Google Assistant, and home automation systems through MQTT, CoAP, and REST API.