Smart switch relay with two channels, supporting up to 16A per channel, and built-in power metering. Allows you to monitor energy consumption and control home appliances, bi-directional motors, electric circuits, and office. Manage and monitor two lights on a single phase with one device. Track each lights power consumption individually for optimal efficiency. Control lights effortlessly via manual switches, app, home automation systems, or voice commands! Automated Bedroom Curtains Use Shelly 2PM Gen4 to open your curtains or shutters at a set time each morning. Wake up naturally to gentle, gradual light and start your day refreshed and relaxed.