Sonoff MINI-ZBD Zigbee 3.0 Dry Contact Smart Relay Switch
SKU: IOWC-1448
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Sonoff MINI-ZBD Zigbee 3.0 Dry Contact Smart Relay Switch

₹2,519.00 (Inclusive of all taxes)
Out of Stock

The Sonoff MINI-ZBD is a compact Zigbee 3.0 smart relay switch featuring a dry contact output for flexible control of low-voltage devices like garage doors, gates, and pumps. It supports both AC (110-240V) and DC (12-48V) power input for versatile installation and integrates seamlessly with any Zigbee 3.0 gateway for remote control and automation.

Features

  • Zigbee 3.0 Smart Relay: Enables wireless control and scheduling via any compatible Zigbee gateway or hub for seamless smart home integration.
  • Dual AC/DC Power Input: Flexible installation with support for 110–240V AC or 12–48V DC, making it suitable for both mains-powered and low-voltage automation projects.
  • Dry Contact Output: Provides a configurable NO/NC relay contact for safely triggering external devices like garage door openers, pumps, and solenoid valves without carrying load power.
  • Zigbee Router Function: Acts as a mesh network repeater to extend the range and improve the stability of your overall Zigbee network coverage.
  • Compact Form Factor: Measures just 41 x 43 x 21.5 mm for discreet installation in electrical boxes, control panels, or behind switches.

Out of stock

Description

The Sonoff MINI-ZBD is a specialized Zigbee 3.0 relay module designed for dry contact control in home and industrial automation. Its core function is to provide a configurable Normally Open (NO) or Normally Closed (NC) relay output, allowing it to safely trigger external devices that require a simple contact closure, such as garage door openers, electric gates, irrigation valves, and boiler systems. This design isolates the control signal from the load power, enhancing safety and compatibility.

Powered by an EFR32MG21 wireless SoC, the module establishes robust IEEE 802.15.4-based Zigbee connectivity. It not only functions as an end device but also operates as a Zigbee router, actively relaying messages to strengthen mesh network stability and extend coverage. The unit’s broad power input range, accepting both high-voltage AC and low-voltage DC, offers significant installation flexibility for retrofitting into existing systems or designing new low-voltage control circuits.

Key Features

  • Zigbee 3.0 Mesh Networking: Connects to standard Zigbee hubs for remote control, scheduling, and scene automation while acting as a router to reinforce network integrity.
  • Universal Power Compatibility: Accepts a wide range of input voltages from 110–240V AC or 12–48V DC, simplifying integration into diverse electrical setups.
  • Isolated Dry Contact Relay: Features a relay with NO/NC contacts for safe, low-voltage signal control of external equipment, preventing power backfeed.
  • Compact and Discreet Design: Housed in a white PC enclosure with minimal dimensions for easy concealment within junction boxes or equipment panels.
  • Low-Power DC Load Support: Capable of switching 12–24V DC loads up to 8W or resistive loads up to 2A at 24V DC for various actuators and solenoids.
  • Robust Environmental Rating: Operates reliably in environments with 5–95% relative humidity (non-condensing) and temperatures from -10°C to 40°C.

Applications

  • Garage Door & Gate Automation: Trigger openers and motors via dry contact for secure, remote access control.
  • HVAC & Boiler Control: Integrate with heating systems and pumps for scheduled operation and energy management.
  • Irrigation & Water Management: Automate solenoid valves for garden watering, agricultural irrigation, or water feature control.
  • Industrial & Low-Voltage Control: Interface with PLCs, conveyor belts, or machinery for wireless start/stop commands in DC systems.
  • Smart Home Retrofit: Add wireless control to existing dumb switches, fans, or lighting circuits that use external trigger signals.

Technical Specifications

ModelMINI-ZBD
BrandSonoff
Wireless ProtocolZigbee 3.0 (IEEE 802.15.4)
MCU / SoCEFR32MG21
Input Voltage110–240V AC / 12–48V DC
Output TypeDry Contact Relay (NO/NC)
Maximum Load24V DC, 2A Resistive / 12–24V DC, 8W
Operating Temperature-10°C to 40°C
Operating Humidity5–95% RH, Non-Condensing
Housing MaterialPC
Dimensions (L x W x H)43 x 41 x 21.5 mm
Weight34.5 g

Frequently Asked Questions

How do I connect and pair the Sonoff MINI-ZBD with my Zigbee hub?

Power the MINI-ZBD using either an AC line (110-240V) or a DC source (12-48V). Enter pairing mode by pressing the onboard button for approximately 5 seconds until the LED indicator flashes rapidly. Then, initiate the device addition process within your Zigbee gateway's companion app (like Sonoff, Samsung SmartThings, or Home Assistant with a Zigbee coordinator). The device will appear as a Generic switch or contact sensor for integration into your automation routines.

What is the difference between a dry contact relay and a regular smart switch?

A dry contact relay, like in the MINI-ZBD, only closes or opens an isolated electrical contact without supplying power to the connected device. It sends a simple signal to trigger an external controller, such as a garage door opener's terminal block. A regular smart switch directly carries and switches the load current (e.g., 10A AC) to power lights or appliances. The dry contact method is safer for interfacing with high-power or proprietary control systems.

Can I use the MINI-ZBD to directly control a 120V AC light or appliance?

No, the MINI-ZBD is not designed to switch AC mains voltage directly. Its dry contact output is only rated for low-voltage DC loads up to 24V DC at 2A resistive or 8W. To control an AC appliance, you would need to use the MINI-ZBD's relay to trigger a separate, appropriately rated AC contactor or relay that can handle the higher voltage and current of the load, ensuring safe and compliant electrical installation.

Does the MINI-ZBD require a neutral wire for AC power installation?

The product specifications indicate compatibility with 110-240V AC input, which typically requires a connection to both line (hot) and neutral wires to complete the circuit for its internal power supply. You should verify your specific wiring setup. For DC installation, simply connect the positive and negative wires from your 12-48V DC power source to the corresponding terminals on the device, observing correct polarity.

Package Includes

  • 1 x Sonoff MINI-ZBD Zigbee 3.0 Dry Contact Smart Relay Switch

Additional Information

Weight 0.0345 kg
Dimensions 4.3 × 4.1 × 2.15 cm

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