M5Stack ATOM HUB SwitchD 2-Relay Kit Provides short circuit protection Features 2-way relay Compatible ATOM Matrix/ATOM Lite Built-in AC-DC circuit Remote control via Bluetooth, WiFi, and RS485 The M5Stack ATOM HUB SwitchD 2-Relay Kit is a dual relay expansion kit. The D in the name stands for "Direct" since the power supply is directly connected to the relays. The AC power supply flows to the NO (Normally Open) contacts of the two relays and can be controlled via the M5Atom. When in use, the user only needs to connect the electrical load to the relay, and there is no need to connect the power line separately. A built-in SP485EE level conversion chip provides an RS485 communication interface to support multi-device communication. It also integrates a 9-24 V step-down 5 V circuit to adapt to the power demand in industrial scenarios and expand power supply capabilities.
