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tongou was established in 1993 and is the brand of Changyou Technology.
We position ourselves as providers of intelligent product solutions for high and low voltage electrical systems, taking on solving customers’ pressures and challenges as our responsibility and creating value for them.
We utilize intelligent products to serve global customers, making life smarter and more convenient to benefit your life.


WiFi Smart Switch
ZigBee Smart Switch
New Series
Product Dimensions : 3.94 x 0.98 x 3.15 inches; 4.16 ounces
Date First Available : December 3, 2024
Manufacturer : Changyou Technology (Zhejiang) Co., Ltd.
ASIN : B0DPHMS489
Best Sellers Rank: #133,827 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #302 in Electrical Outlet Switches
Customer Reviews: 4.6 4.6 out of 5 stars (22) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Note: This product is a smart WiFi switch with over-current protection, overvoltage protection, undervoltage protection, overpower protection, and CPU temperature protection, but no short circuit protection. It is recommended to use it with a circuit breaker. Complies with IEC 60947 standard
Applicable Current Scenarios: AC-1, applied to circuits controlling heaters, incandescent lamps, ovens, and other purely resistive loads; Max Wiring Capacity: Power side: 10 mm²; Load side: 10 mm²; Type: Latching relay, capable of carrying high current; Poles Description:1P+N, N pole cannot be cut off
Real-time Power Monitoring (AC Electricity Positive Import) and Management: (1) Analyze the real-time electricity consumption, real-time current, real-time voltage, and real-time power of connected devices, and record historical power consumption (by hour, day, month, and year). Also can export power consumption data via email. (2) Clear Electricity Data. (3) There are functions to display the current remaining electricity, prepaid switch, and clear the remaining electricity, which facilitates comprehensive electricity management.
Local Control: (1) Even no wifi, you can set the parameters and functions through the 3 buttons on the smart wifi switch. (2) Password can be set to prevent unauthorized access and modification
Multiple Reclosing Functions: There are overcurrent reclosing, overpower reclosing and overvoltage and undervoltage reclosing functions. Please note that after overcurrent/overpower protection, the device will attempt 3 reclosures. If overcurrent/overpower persist, no further reclosure will occur. After overvoltage and undervoltage protection, the device will automatically reclose. Closing threshold: overvoltage threshold -15 V, undervoltage threshold +15 V.
Screen Display: Smart switch with LCD color backlit display, clear and easy to read data. Adjustable 1-5 levels of brightness and directional.
Wifi Multiple Controls: (1) Remote Control via APP: You can control household appliances via the “Smart Life” or “Tuya” APP. There are no restrictions regarding distance and time. (2) Voice Control: The Wi-Fi switch is compatible with Amazon Alexa and Google Assistant. You can control your home appliances with voice command switch. (3) Multiple Timing: The smart switch provides schedule, sunrise/sunset/circulate timer mode to avoid unnecessary power consumption and achieve power saving
8 reviews for Smart Wifi Switch, 1P+N AC90-240V 1-50A, Smart Life/Tuya APP Remote Control, with Power Monitoring, Export/Clear Power Data, DIN Rail Mounted, with LCD Display, Recloser Function, FCC Certified
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$31.99

Cailan –
Works great
Works great. More features than you’d need
Ramón Soto –
Funciona muy bien
Buen equipo y conectividad, cumple lo propuesto.
Igr Alexánder Fernández Saúco –
Fast fault response, but reclose logic and local access need improvement
The Smart WiFi Switch performs reliably overall. It trips very quickly during faults like overvoltage, which gives me confidence in its protection features. The LCD is clear, and the Smart Life/Tuya app integration works well for remote monitoring.However, two things could be improved:Fixed reclose thresholds: The ±15V range for undervoltage/overvoltage reclosure feels rigid. In areas with tighter voltage swings (e.g., 108V–122V), this can be uncomfortable or impractical. A configurable reclose threshold would make the device much more adaptable.Local monitoring issues: I rely on this for local data access, but when the internet connection drops, the device doesn’t return data properly—even after switching to Local mode. This limits its usefulness in offline scenarios.Still, for DIN rail installations and basic smart control, it’s a solid option. Just hoping future firmware updates address these quirks.
Jose V. –
Fácil de usar
Excelente 👌
Raul Andres Jimenez Rodriguez –
Autorización
Muy buena opcion para automatizar tu caja de control electrico.
Charles O. Autry –
not 240
why list it as 240 when thats 100% impossible without 2 poles ????
Samir –
Buen producto
Llego en buen estado
German –
Excelente