SONOFF Smart Home Devices, Deals and Buying Guide
Building a smart home does not require replacing every appliance at once. A smart switch can automate existing lighting, while sensors, thermostats and radiator valves can add more control to everyday routines.
SONOFF Official Store offers smart-home products for lighting, heating, energy monitoring, security and home automation. Its catalogue includes DIY smart switches, wall switches, Zigbee gateways, sensors, smart plugs, control panels and compatible home appliances.
Customers can use the exclusive coupon code OANHNGUYENTHIKI to receive 10% off eligible purchases. Current product promotions include discounts of up to 33% on smart wall switches and 26% on selected Zigbee radiator valves.
Affiliate Disclosure: This article contains affiliate links. If you make a purchase through these links, we may receive a commission at no additional cost to you.
What Is SONOFF?
SONOFF is a smart-home technology brand offering products for both beginners and experienced automation enthusiasts. Many devices work through the eWeLink app, while selected products support Zigbee, Wi-Fi or Matter.
The range covers simple devices, such as smart plugs and wireless buttons, as well as more advanced products that require installation inside a wall box or electrical panel.
SONOFF’s ecosystem allows compatible devices to work together. For example, a door or window sensor can trigger another device, a temperature sensor can support heating automation, and a wall switch can be controlled through schedules or scenes.
Compatibility varies by product. A Wi-Fi device may connect directly to the home router, while a Zigbee product generally requires a compatible Zigbee gateway. Matter functionality may also depend on a supported controller or bridge.
Current SONOFF Coupon Code and Deals
The exclusive promotion available through this article is:
Coupon code: OANHNGUYENTHIKI Offer: 10% off eligible purchases
Additional SONOFF offers include:
- 10% off a first order after subscribing to the newsletter
- Free standard shipping on qualifying orders over $89
- 10% off the pre-order TP-WGZBA Zigbee Smart Thermostat
- Up to 33% off selected smart wall switches, with prices from $15.90
- Up to 26% off the TRVZB Zigbee Thermostatic Radiator Valve
- A 30-day money-back guarantee on eligible purchases
- A two-year warranty on eligible products
Only one coupon code will normally apply to an order. Since the exclusive code and newsletter offer both provide 10% off, customers can use OANHNGUYENTHIKI without registering for the first-order email discount.
Product promotions, eligibility and shipping thresholds may differ according to destination.
TP-WGZBA Zigbee Smart Thermostat
The TP-WGZBA Thermostat Core is a flush-mounted Zigbee smart thermostat designed for compatible hydronic underfloor heating systems and boilers.
During the pre-order promotion, it is listed at $35.91, reduced from $39.90. The pre-order period is scheduled from September 4 to September 28, 2026, with UK and EU shipping expected to begin from September 30.
The thermostat includes both a powered output and a potential-free dry-contact output. This gives it compatibility with selected water-heating actuators and boilers, subject to the electrical and control requirements of the heating system.
Users can configure three weekly heating plans, with up to twelve temperature periods per day. This may help households create different schedules for weekdays, weekends or periods away from home.
The TP-WGZBA also supports open-window detection. When used with compatible SONOFF door or window sensors on the same gateway, heating can pause when a window is opened.
A Zigbee hub is required. Users interested in open-source platforms should review the current Zigbee2MQTT or ZHA compatibility notes, because some functions may require a particular software version or manual configuration.
The thermostat needs live, neutral and control wiring. It is not designed for direct connection to high-load electric underfloor heating. Installation should be completed by a qualified electrician or heating professional.
SONOFF Smart Wall Switches
SONOFF’s smart wall-switch collection includes Zigbee, Wi-Fi and Matter-enabled models. Selected switches are currently reduced by up to 33%, with prices beginning at approximately $15.90.
Popular options include the ZBM5 Zigbee Wall Switch, M5 Matter Wall Switch and TX Ultimate Touch Wall Switch. The best model depends on the home’s wiring and preferred smart-home platform.
A Zigbee switch can help strengthen a compatible Zigbee mesh when installed as a powered router. A Matter-enabled model may offer broader interoperability with supported ecosystems, although a compatible Matter controller may still be necessary.
Some wall switches require a neutral wire, while other selected devices are designed for installations without one. Buyers should never assume compatibility based only on the switch dimensions.
Before ordering, remove no wiring yourself unless you are qualified to do so. Check the wall-box depth, voltage, maximum load, gang configuration and whether the circuit includes a neutral conductor.
Smart wall switches are especially useful when household members still want familiar physical controls. Lights can be operated manually at the wall while also being included in app schedules, scenes or voice commands.
TRVZB Zigbee Thermostatic Radiator Valve
The TRVZB is a Zigbee thermostatic radiator valve designed to automate compatible hot-water radiators. Selected configurations are advertised from approximately $27.90, with savings of up to 26%.
A smart radiator valve allows users to set a target temperature and create heating schedules for an individual room. This can be helpful when bedrooms, offices and living spaces are used at different times.
The valve requires a compatible Zigbee gateway. Once connected, users can manage settings through the supported app and include the device in heating automations.
Before purchasing, check the existing radiator-valve connection. Adapters may be included for certain valve types, but not every radiator is automatically compatible.
The TRVZB does not replace the boiler thermostat or create heat independently. It controls the flow through a compatible radiator as part of an existing hydronic heating system.
Room temperature near a radiator can differ from the temperature elsewhere in the space. Pairing the system with a compatible remote temperature sensor may provide better information for automation, depending on the selected gateway and setup.
Which SONOFF Product Should You Choose?
Choose the TP-WGZBA if you have a compatible boiler or hydronic underfloor heating system and want central scheduling through Zigbee.
Select a TRVZB when you want room-by-room control of compatible radiators. Multiple valves may be used across a home, but the total cost and gateway capacity should be considered.
Smart wall switches are better for lighting automation. They preserve physical control while adding schedules, scenes and remote operation.
For first-time users, begin with one platform and communication standard. Buying several unrelated Wi-Fi, Zigbee and Matter devices without a clear plan can make setup more complicated than necessary.
Understanding Wi-Fi, Zigbee and Matter
Wi-Fi products connect through the household network and usually do not require a separate Zigbee hub. They are convenient for a small number of devices but depend on router coverage.
Zigbee devices communicate through a compatible gateway and form a low-power mesh network. Powered Zigbee devices can sometimes strengthen this network, while battery-operated sensors generally do not act as repeaters.
Matter is a smart-home connectivity standard designed to improve interoperability between ecosystems. A Matter logo does not mean that every feature will work identically in every app.
Check the product page for supported platforms, hubs and feature limitations before purchasing.
Installation and Electrical Safety
Many SONOFF devices operate at mains voltage. Incorrect wiring can cause electric shock, fire or damage to the device and connected equipment.
Always turn off power at the main supply before installation, removal or maintenance. Confirm that the circuit is de-energised with appropriate testing equipment.
Use a qualified electrician whenever wiring, load limits or heating compatibility are uncertain. Smart functionality does not change the basic electrical safety requirements.
For heating products, verify the actuator type, boiler input and control voltage with the installer or equipment manual. Never connect mains power to a dry-contact terminal unless the manufacturer explicitly specifies it.
Shipping, Returns and Warranty
SONOFF Official Store offers free standard shipping on qualifying orders over $89. Shipping cost and estimated delivery depend on the selected warehouse, product and destination.
The store also advertises a 30-day money-back guarantee and a two-year hassle-free warranty for eligible products.
Pre-order items follow a different schedule from in-stock products. If a TP-WGZBA is purchased together with available products, the entire order may be delayed until the thermostat is ready. SONOFF recommends placing pre-order products separately when customers do not want other items held.
Review all return and warranty terms before installation, particularly for products involving wiring.
How to Save at SONOFF
Visit SONOFF Official Store through the affiliate link and add compatible devices to the cart.
Enter OANHNGUYENTHIKI to claim 10% off eligible products. Confirm that the discount appears before checkout.
For the TP-WGZBA, compare the exclusive code with the automatic 10% pre-order price. Smart wall switches and TRVZB valves may already have larger product-specific markdowns.
If your order is close to $89, compare the shipping charge with the price of any additional device you genuinely need. Do not add unnecessary products solely to reach the free-shipping threshold.
Final Thoughts
SONOFF Official Store offers accessible smart-home products for lighting, heating and automation.
The TP-WGZBA provides scheduled control for compatible boilers and hydronic underfloor heating. TRVZB valves support room-level radiator management, while smart wall switches add connected control without removing the familiar physical switch.
Check your wiring, gateway and smart-home platform before ordering. When installation involves mains voltage or heating controls, use a qualified professional.
Apply coupon code OANHNGUYENTHIKI at checkout to receive 10% off eligible SONOFF purchases.
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