Smart Switch by Martin Jerry, Single Pole, Smart Home Devices That Work with Alexa, 2.4G WiFi, Need Neutral Wire, Not Dimmer
Gadronics 
Price: $13.99
(as of Jun 28, 2025 08:06:41 UTC – Details)
From the brand
Smart Dimmer Brand
Since 2017, we started to work on smart switches, from single pole to 3-way, dimmer to fan control. We are trying provide reliable and affordable IOT devices to our users.
How did we get our start?
Users know us from our 1st smart dimmer (MJ-SD01), which has a wide compatibility for different lamps.
From the first dimmer, we upgraded our design according to feedbacks from users, such as nigh light, auto dimmer, calibration, 3-way. Then, we win more and more users.
What makes our products unique?
We listen to our users. They want night light, we provide this feature. They like to link HA via MQTT, we provide tasmota pre-flashed devices.
Why do we love what we do?
We believe the IOT devices can really make our life easier and energy friendly.
Is Discontinued By Manufacturer : No
Product Dimensions : 5.04 x 3.31 x 1.29 inches; 6.38 ounces
Item model number : MJ-S01
Date First Available : August 26, 2018
Manufacturer : MJ
ASIN : B07GSTJ8TV
Smart light switch: This smart wall switch can work as well as a traditional switch to control the power of any home devices.
Smart home: This smart switch works with google home, alexa for voice control. You can also remotely control it on smart phones. Set home automation according to schedules, sunset, sunrise and etc home automation system on smart life App
Installation: The switch is easy for installation like a toggle switch. But it needs neutral wires. Single-Pole Use (Not 3-way), 2.4G Wi-Fi ONLY (Not Support 5G). Please send us wiring photos if you have any installation problems.
Advantage: Relay(15A) and switch buttons in it can work for more than 100,000 times (27 years if 10 times/day). PC&ABS material with fire retardant additives to ensure good durability and fire resistance
Service: Martin Jerry has a professional tech support team to solve your problems promptly. Emails will be replied within 12hs. We offer 90-Day 100% refund, 1-year Quality Warranty
Customers say
Customers find the smart switch works well with Alexa, SmartLife, and HomeSeer systems, and appreciate its straightforward installation process and good value for money. The build quality receives mixed feedback, with some finding it solid while others say it’s made cheaply. The light control feature and connectivity also get mixed reviews – while some like the little light indicator, others report issues with lights not turning on, and many experience connection problems.
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