SONOFF 4CHR3 4CHPROR3 4-Port Wi-Fi Smart Switch with RF Control The SONOFF 4CHR3/4CHPROR3 is a 4-channel Wi-Fi smart switch with RF and app control, ideal for remotely controlling lights, pumps, or motorized devices. Thanks to support for dry contact mode, it’s perfect for garage doors or curtains. Each channel can handle up to 10 A and is designed for standard DIN-rail mounting, ensuring a clean and professional setup. No hub required-simply connect via Wi-Fi, control via the eWeLink app, or operate hands-free using voice commands with Alexa and Google Home. Wi-Fi connection, no hub required Connect directly to your home network via the Wi-Fi protocol, eliminating the need for additional gateways. Control devices remotely anytime, anywhere using the eWeLink app. Dry contact for smart upgrades Turn conventional devices into smart systems! Perfect for retrofitting garage doors, motorized curtains, and more. Voice Control with Alexa & Google Home Seamless integration with popular smart ecosystems. Control devices hands-free with voice commands-such as “Alexa, turn off the garage light" or “Hey Google, close the living room curtains." 10 A High-Load Capacity per Channel Supports both DC and AC inputs (100-240 V) with a robust 10 A load capacity per channel. Safely control devices such as water heaters, pumps, and HVAC systems. DIN-rail mounting ready Designed for standard DIN-rail mounting. This ensures a clean and professional layout, minimizes clutter, and improves accessibility for maintenance.