SONOFF MINI-D, also called SONOFF Mini Dry WiFi Smart Switch, is a Matter-compatible smart switch with dry contact output suitable for controlling devices like garage doors, boilers, air conditioners, and other dry contact input equipment, as well as small DC motors (8W max) such as pumps and solenoid valves.
It’s designed to support 12-48V AC or DC inputs, handle low-power DC motors up to 8W, and can be wired as Normally Open (NO) and Normally Closed (NC). Like other SONOFF devices, it’s controlled with the eWelink app, but Matter support means it can integrate with other apps such as Amazon Alexa, Google Home, Apple Home, etc…
SONOFF MINI-D specifications:
- Wireless SoC – Espressif ESP32-D0WDR2 (so ESPHome firmware support is likely… eventually)
- Connectivity – 2.4GHz WiFi
- Misc
- LED for network status, pairing mode, and switch type selection
- Button for ON/OFF, pairing mode, and external switch type selection.
- Max load
- 24V DC/2A resistive load OR
- 12V/24V DC up to 8W
- Power input
- 100-240V AC 50/60Hz up to 0.1A OR
- 12-48V DC up to 1A
- Dimensions – 43 x 41 x 21.5mm
- Weight – 34.5 grams
- Material – PC
- Temperature Range – -10°C~40°C
- Humidity – 5%~95% RH, non-condensing
- Operating height – Under 2,000 meters
- Certifications – FCC/CE/RoHS
- Safety – EN 60669-2-1
But what are dry contacts exactly? A dry contact is a switch or relay contact that is used to control or signal without supplying any power itself. It essentially acts as an open or closed circuit, which can be used to interact with other electrical systems. Dry contact outputs are typically safer since they do not supply power to the appliance.
While Matter compatibility means ON/OFF control and Scenes are supported in any compatible app, eWelink is stilled for OTA firmware update, and a long list of features that include built-in schedules, switch mode, detach relay, power-on state, inching setting, and network indicator ON/OFF. You’ll find a multilingual quick start guide and a more detailed user manual in English or Chinese on the company’s website.
ITEAD sells the SONOFF Mini-D dry contact WiFi smart switch for $12.90 on its website. As usual, you can use the coupon code CNXSOFTSONOFF to get a 10% discount.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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