ATOM HUB SwitchD 2-Relay Kit


Regular price $31.90

10+ In Stock

Shipping calculated at checkout.


ATOM HUB SWITCH D is a two channel relay power control switch designed specifically for compatibility with the ATOM main controller. The "D" in its name stands for "Direct", indicating that the Switch D uses a direct power input connection to the relays. The AC power supply flows directly to the Normally Open (NO) contacts of the two relays, which are controlled by the ATOM to switch on and off. When using Switch D, users only need to connect their electrical loads to the relays, without the need for additional power lines. Compared to traditional relay control solutions, this module provides a simpler and more efficient approach to controlling electrical loads.

In addition to powering the relay loads, the input power supply is also passed through a built-in step-down module to provide the ATOM with a 5V/1A DC power supply. To ensure safety of use, the power input circuit has overheating and short-circuit protection. It effectively disconnects the circuit in the event of excessive current or short circuit to prevent damage to components. Switch D incorporates the SP485EE level conversion chip, which provides an RS485 communication interface to support communication with multiple devices. It also has a built-in 9-24V to 5V step-down circuit to meet the power requirements in industrial scenarios and extend the power supply capabilities. A set of HY2.0-4P interfaces is provided for connecting I2C peripherals or general purpose I/O devices. Combined with ATOM's built-in WiFi functionality, the ATOM HUB SWITCH D enables quick setup of remote device switching applications.

Product Features

  • Compatible ATOM Matrix/ATOM Lite
  • Built-in AC-DC circuit
  • 2-way relay
  • Built-in RS485 level-conversion, supporting Modbus
  • HY2.0-4P port extend
  • Short circuit protection
  • Remote control via Wi-Fi and RS485


  • 1x ATOM Lite
  • 4x Magnet
  • 1x double-side tape
  • 1x DIN Rail
  • 1x 3.96*4P plug
  • 3x 3.96*3P plug
  • 1x M4 Hex Key
  • 1x M2 Hex Key
  • 2x M4*10mm Hexagon countersunk screw
  • 1x M2*20mm Hexagon socket cup head machine screw


  • Intelligent switch


Resources Parameter
Relay AC 250V/10A(Instantaneous current 16A), DC 5V/1A
Switch power supply(AC-DC) AC 250V-DC 5V
RS485 supply voltage 9V-24V
Interface 1x HY2.0(PORT A), 1x HT3.96R 4P(RS485), 2x HT3.96R 3P(Relay), 1x HT3.96R 3P(AC/DC IN)
Net weight 134g
Gross weight 158g
Product Size 72*40*30mm
Package Size 104*77*35mm
Case material Plastic ( PC )


  • Customer Reviews

    Based on 1 review
    Andy Barrow
    Nice self-contained unit

    Nice, self contained unit. I like not having to wire units together, and having the 12V power supply. I think an upgrade would be to provide a means on the board of jumpering out the AC connection to the relays, so that they could be used separately. I know I could've just purchased the ATOM HUB Switch 2-Relay Kit, but it seems like you could just produce a single unit with a jumper capability, and not have two different products.

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