ATOM HUB SwitchD 2-Relay Kit

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The "D" stands for "Directly," indicating that the Switch-D adopts a design where the power input is directly connected to the relays. The AC power flows directly to the NO (Normally Open) contacts of the two relays, which are controlled by the ATOM for switching. When using this module, users only need to connect the electrical load to the relay without the need for additional power wiring. Compared to previous relay control solutions, this module offers a more concise and efficient way to control electrical loads. In addition to powering the relay loads, the input power also passes through a built-in step-down module to provide a 5V/1A DC power supply for the ATOM. To ensure safety, the power input circuit is equipped with overheat and short-circuit protection, effectively disconnecting the circuit in case of excessive current or short-circuit to prevent component damage. The module features an SP485EE level conversion chip, providing an RS485 communication interface that supports multi-device communication. It also integrates a 9-24V to 5V step-down circuit to meet the power requirements in industrial scenarios, expanding the power supply capability. A HY2.0-4P interface is provided for connecting I2C peripherals or general-purpose I/O devices. Combined with the built-in WiFi functionality of the ATOM, Atom Switch-D can quickly set up remote device switching applications. Features Compatible with Atom-Matrix/Atom-Lite Built-in AC-DC power supply circuit 2-channel relay Built-in RS485 level conversion, supports Modbus HY2.0-4P expansion interface Short-circuit and overheat protection Controllable via WiFi and RS485 Includes 1 x Atom-Lite 1 x Atom Switch-D 4 x Strong magnets 1 x Double-sided tape 1 x Rail clamp 1 x HT3.96-4P terminal 3 x 3.96 x 2P male headers 1 x M4 hex key 1 x M2 hex key 2 x M4*10mm hex socket head screws 1 x M2*20mm hex socket head machine screw Applications Smart switches Specifications Specification Parameters Relay parameters AC 250V/5A Switch power (AC-DC) AC 110 ~ 250V -> DC 5V RS485 supply voltage DC 9 ~ 24V Interfaces 1 x HY2.0-4P (PORT.A), 1 x HT3.96-4P (RS485), 2 x HT3.96-2P (Relay), 1 x HT3.96-2P (AC/DC IN) Housing material Plastic (PC) Product Size 72 x 40 x 30mm Product weight 134g Package Size 102.0 x 78.0 x 35.0mm Gross weight 158g Learn and Documents → DOCUMENTS Show more