Introduction

Zigbee Dry Contact Smart Switch

User Manual

MINI-ZBD is a Zigbee 3.0 dry contact smart switch supporting AC/DC power. It controls motors, garage doors, and other dry contact devices, with app-based remote control, scheduling, and voice control. It also acts as a Zigbee router to boost signal coverage and enables smart automation with other devices.

Remote Control

Relay Function

Timer Schedule

Dry Contact

Output

Voice Control

Smart Scene

External Switch

Support AC/DC

Input

① Button

  • Single Press: Turn on/off the smart device.
  • Press and hold for 5 seconds: Device enters the pairing mode. (Pairing time 3 minutes)
  • Press and hold for 10 seconds: Factory Reset
  • Press three times in succession: Switch the external switch type.

② LED indicator (Blue)

  • Slow flash: Device is in pairing mode.
  • Keeps off: Pairing failure/Timeout
  • Keeps on: Normal connection with the gateway.
  • Fast flash: Abnormal connection with the gateway.
  • Flashes three times quickly: Switch the external switch trigger type.

Compatible Voice Assistants

Specification

Name

Zigbee Dry Contact Smart Switch

Model

MINI-ZBD

MCU

EFR32MG21

Rating

100-240V~ 50/60Hz 0.1A Max OR 12-48V=1A Max μ

Load

24V=2A Max Resistive load OR 12/24V=8Wwidth="100"

Zigbee

IEEE 802.15.4

Net Weight

35.3g

Dimensions

41x43x21.5mm

Color

White

Casing Material

PC

Applicable Place

Indoor

Wiring

18AWG to 14AWG (0.75mm² to 1.5 mm² )

Working Temperature

10T40 (-10℃~40℃)

Working Humidity

5%~95% RH, non-condensing

Working Height

Less than 2000m

Pollution Degree

II

Rated Impulse Voltage

4KV

Automatic Action

20000 Cycles

Control Type

1.B

FCC ID

2APN5-MINIZBD

Certification

CE/FCC/RoHS

Installation
1. Power off

width="100" WARNING:

① Installation and maintenance must be carried out by a qualified electrician. Do not wire or touch the terminals while the device is powered on to avoid the risk of electric shock.

② To ensure safe electrical installation, a 3A overcurrent protection device must be used in the MINI-ZBD control output circuit.

③ For DC use only (12–48V⎓) or single-phase AC (100–240V~). Connecting to a multi-phase power supply may damage the device

2. Wiring instruction

width="100" Do not connect AC and DC power inputs at the same time.

width="100" Ensure correct wiring connections.

  • DC low power load wiring

Dry contact wiring：

width="100" Applicable to devices that can be controlled via dry contact.
width="100" To ensure compatibility with the garage door motor, please short-circuit the terminals of the motor that were originally used to connect to the wall switch (the short-circuiting process is safe, so don’t worry). If the garage door motor operates after short-circuiting, it is compatible; if the motor does not operate, it is not compatible.

Instructions of wiring symbols

Terminals

Wires

NO
Normally Open (Output Terminal)
 
 
COM
Common (Output Terminal)
 
 
NC
Normally Closed (Output Terminal)
 
 
N
Neutral (Input Terminal)
N
Neutral Wire
L
Live (Input Terminal)
L
Live (100~240V) Wire
S1
External Switch (Input Terminal)


S2
External Switch (Input Terminal)


DC+
12V-48V DC Positive (Input Terminal)
+
12V-48V DC Positive Wire
DC-
12V-48V DC Negative (Input Terminal)
–
12V-48V DC Negative Wire

 

 

3. Power on

After powering on, the device will enter the pairing mode during the first use. The LED indicator will “flash slowly”.

width="20"  The device will exit the pairing mode if not paired within 3 mins. If you want to enter this mode, please long press the button for about 5s until the LED indicator changes in a slow flash and release.

Check the Device Status

External Switch Type: The device’s factory default is the rocker switch. To switch to the momentary switch, you need to short press the device button three times. If the blue light flashes three times, it means the switch is successful.

Add a Device

1. Download the eWeLink App

Please download the “eWeLink” App from Google Play Store or Apple App Store.

2. Add SONOFF Zigbee gateway

3. Scan QR code to add the device

Enter “Scan”.

Scan the QR code on the device.

Select “Add Device”.

(If the device exits pairing mode)

Long press the button for 5 seconds.

Check LED indicator flashing status (Slow flashing).

Select Zigbee gateway.

Wait until the addition is done.

Compatible SONOFF Gateways

Recommended SONOFF gateway models: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost.

Other compatible SONOFF gateway models: ZBDongle-P, ZBDongle-E.

Third-party compatible gateway models:

Amazon Gateway Model：Echo Plus 2nd, Echo Show 2nd, Echo 4th Gen

Samsung Gateway Model: SmartThings hub V3

*Other gateways supporting ZigBee3.0 wireless protocol. Detailed information is in accordance with the final product.

Install the device in the mounting box.

Factory Reset

Trigger conditions (any one condition met)

  • Press and hold the device button for 10 seconds.
  • Rapidly toggle the external switch 10 times (all settings will reset to factory defaults except the type of external switch).
  • Delete the device on the App.