SONOFF MINI-ZBD Zigbee Dry Contact Switch Module

About this product

The SONOFF MINI-ZBD Zigbee Dry Contact switch module is an intelligent module with a potential-free contact, designed to control various devices and automation systems. It communicates using the Zigbee 3.0 protocol and offers NO/NC/COM outputs, allowing for a wide range of applications in home and industrial automation.

Universal Application of Dry Contact

The SONOFF MINI-ZBD module has a Dry Contact output, which does not supply voltage to the controlled device, but only closes or opens the circuit. This means it can be safely used in many automation installations, regardless of the type of device, and the support for NO and NC contacts allows for operation to be tailored to the system's requirements.

Stable Zigbee 3.0 Communication

The module communicates using the Zigbee 3.0 protocol, ensuring fast and stable connectivity with low energy consumption. Additionally, it functions as a Zigbee router, extending the network range and improving communication between devices that are far from the hub.

Advanced Control and Automation

The module allows for remote control, scheduling, and automation scenes in compatible applications. The Detach Relay function allows the physical switch's operation to be separated from the relay's operation, enabling a traditional button to trigger scenes or automations without physically switching the contact.

Compact Design and Easy Installation

The module has small dimensions of 41 × 43 × 21.5 mm, allowing for installation in junction boxes and limited spaces. The housing is made of durable PC material, ensuring safe and reliable operation in indoor installations.

Reliability and Durability

The module's relay withstands up to 20,000 operating cycles, guaranteeing long service life. The module supports wires with a cross-section of 0.75 to 1.5 mm² and features an impulse resistance of 4 kV, making it suitable for various smart home projects.

Specifications

Model	MINI-ZBD
Device type	intelligent Dry Contact module
Communication protocol	Zigbee 3.0 (IEEE 802.15.4)
MCU chip	EFR32MG21
AC power supply	100-240 V~, 50/60 Hz, 0.1 A max
DC power supply	12-48 V⎓, 1 A max
Maximum load	24 V⎓ / 2 A (resistive load) or DC motors 12/24 V up to 8 W
Contact type	NO / COM / NC (Dry Contact)
Zigbee router function	Yes
Zigbee Binding function	Yes (Home Assistant)
Detach Relay function	Yes (eWeLink and Home Assistant)
Scheduling and scene control	Yes
Housing material	PC
Dimensions	41 × 43 × 21.5 mm