Wi-Fi Smart Shelly PLUS RGBW PM is a single-channel dimmer designed for dimming and controlling lighting, mainly LED strips, including RGB, with a supply voltage of 12~24 VDC. It uses Wi-Fi 802.11 b/g/n, Bluetooth.
Wi-Fi Smart Shelly Dimmer 2, 262184, is an intelligent dimmer for build-in in wall, designed to control and dimming LED lighting remotely with remote access (via the Internet) or via cloud service via WiFi, phone, computer or another device that supports HTTP and/or UDP. It can control up to one electrical circuit, alone or as an accessory for smart home control. Maximum load halogen bulbs -220W, LED - 200W, transformers 150VA. Minimum consumption 10W. For the little ones you need Shelly Bypass. It uses the WiFi 802.11 b/g/n radio protocol with a frequency of 2400-2500 MHz.