







【WST16-W】US 40A/20A Tuya WiFi Smart Water Heater Switch | High Power Wall Timer Switch
The Tuya WiFi Smart Water Heater Switch is designed for US electrical standards, available in 40A and 20A versions. It delivers reliable control for high-power appliances such as water heaters, air conditioners, and heaters.
With Tuya Smart / Smart Life App support, users can easily remotely control, set timers, or use voice assistants like Alexa and Google Assistant.
Its touch glass panel provides a sleek modern look and responsive operation, while auto-off timer options (30/60/90/120 mins) enhance convenience and energy efficiency.
- High Power Options (40A / 20A): Suitable for various heavy-duty electrical appliances.
- Tuya App Control: Works seamlessly with Tuya Smart and Smart Life mobile apps.
- Voice Control: Compatible with Alexa and Google Assistant for hands-free operation.
- Built-in Timer Options: Auto shut-off settings at 30, 60, 90, or 120 minutes.
- Touch Glass Panel: Durable tempered glass with sensitive touch control.
- Safety Protection: Flame-retardant housing and overload protection ensure reliable use.
- US Standard Size: Fits US wall boxes for easy installation and replacement.
Categories Best Sellers, Smart Panel Switches, Smart Water Heater Switch, Touch Smart Switch, Wi-Fi Smart Switch
Tags Tuya, US, WiFi
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Table of Contents
DESCRIPTION
Technical Details
| Product name: | Smart Water Heater Switch |
| Wireless Frequency: | 2.4Ghz |
| Standard: | US Standard |
| Wireless Standards: | IEEE802.11b/g/n |
| Connection Way: | WiFi+Bluetooth |
| Input voltage: | 100-240VAC 50/60Hz |
| Max current: | 40A / 20A(Max) |
| Raled Power: | 8000W / 4400W |
| Timer: | 30/60/90/120 minutes |
| Panel Material: | Tempered glass |
| Regular color: | white |
| Two Wiring Methods: | Neutral & Live wire |
| APP Control: | Smart Life / Tuya Smart |
| Voice Control: | Amazon Alexa / Google Assistant |
| Countdown function: | support |
| Sharing function: | support |
| Indicator light color status: | Support |
| Size: | 120*72*33mm |
| Part Number: | 【WST16-W】 |
| Product Model: | 【WST16-W-TW-2E】;【WST16-W-TW-4E】; |
Product Model/Specification
| Picture | Max current | Power Monitor | Regular color | Product Code |
|---|---|---|---|---|
|
20A | Support | White | WST16-W-TW-2E |
|
40A | Support | White | WST16-W-TW-4E |
Product Description
Trading Information
| Packaging Details: | The inner packaging is packaged with a packaging box containing an inner support structure, which can effectively prevent the product from being damaged during transportation. The outer packaging adopts a compression-resistant structure, which can effectiv |
FAQ
Q1: Where is the product manufactured?
A1: The product is manufactured in China.
Q2: certifications does this product have?
A2: The product has CE/FCC/ROHS certifications.






