TuyaSmart 1CH 5V-32V AC/DC – One-gang, Wi-Fi, RF, smart relay with NO/NC contacts

The TuyaSmart 1CH 7V–32V RF Tuya Smart Wi-Fi Relay Module is a universal DIY smart relay designed for making various electrical devices smart. It supports Wi-Fi, 433 MHz RF communication, scheduling, inching, and self-locking modes. Daily or weekly schedules and countdown timers can also be configured.

It is an ideal solution for remote control of gate locks, electrically operated gates, PC power supplies, and similar devices. For motor control applications where two-way or multi-directional movement is required, the 2-gang or 4-gang version of the product is needed.

The Wi-Fi smart relay requires a 5V USB power supply or 7–32V AC/DC input voltage for operation, while it can also switch loads up to 220V AC. The switched circuit is independent from the relay’s own power supply. The relay can switch 90–250V AC / 10A or 0–30V DC / 10A connected to the COM input, in either NO or NC mode. It is also suitable for voltage-free, dry contact switching.

The module can be switched to inching mode, where it opens the circuit after 1 second of switching, or closes the circuit again after a 1-second interruption. Installation requires electrical knowledge, so it is mainly recommended for experienced DIY users or professional installation. Through the Tuya Smart or Smart Life app, the relay can be remotely controlled, scheduled, and automated.

Thanks to the built-in 433 MHz RF receiver, the module can be controlled not only from a phone, but also with compatible 433 MHz remote controls, such as Sonoff RF R2 or SmartWise RF4P. With voice control support, the relay can also be switched from Amazon Alexa and Google Home systems.

The product operates in two main modes: normal switching and inching. The operating mode can be changed in the app.

Both NO and NC control wiring are supported. The relay has three connection points: COM, NO, and NC.

• COM: the input, or the common pole for both NC and NO wiring
• NO: Normally Open
• NC: Normally Closed

When using NO and COM wiring, the circuit is open by default, and when the relay is switched, the circuit between COM and NO closes.

When using NC and COM wiring, the circuit is closed by default, and when the relay is switched, the circuit opens. This wiring is used, for example, with some electric gate openers where the gate opens when the circuit is interrupted.

About the Tuya / Smart Life Ecosystem

Tuya is one of the most widely used smart home platforms, bringing together Wi-Fi, Zigbee, Bluetooth, and RF-based devices from many manufacturers in a single app. With the Tuya Smart and Smart Life apps, relays, switches, sensors, lights, sockets, and other smart devices can be controlled remotely.

Tuya-based devices typically support schedules, automations, scenes, shared control, as well as Amazon Alexa and Google Home voice control. One of the main advantages of the platform is its wide product range and simple mobile app-based operation.

For DIY relay modules, basic electrical knowledge is required for installation. Incorrect wiring can be dangerous, so professional installation is recommended when working with 230V AC mains voltage.

Smart Home Protocols and Platform Compatibility

• Wi-Fi + RF version: Remote control via the Tuya Smart or Smart Life app
• Can be controlled not only from the mobile app over the internet, but also locally with Sonoff and SmartWise 433 MHz fixed-code RF remote controls and RF wall switches
• Relay power supply: 5V DC USB or 7–32V AC/DC
• Controlled circuit: Voltage-free dry contact switching, or switching of 90–250V AC / 10A or 0–30V DC / 10A, independently of the relay power supply
• NO/NC wiring and switching supported: The relay can both close and interrupt circuits
• Mobile app: Free iOS and Android apps, Tuya and Smart Life
• Status query: The current relay status is visible in the mobile app
• Remote ON/OFF switching: The relay and connected devices can be switched remotely from the mobile app via the internet
• Scheduling: Multiple timer functions are available, including specific time settings, recurring schedules, countdown timer, and cycle timer
• Auto-off timer: The relay can be set to switch off automatically after a defined time after every activation
• Inching: The relay can be set to short pulse switching, typically 0.5 or 1 second; channels can be configured separately on multi-channel versions
• Shared control: Access can be shared with family members or other users
• Groups and rooms: Tuya and SmartWise smart devices can be organized into groups and rooms in the app
• Smart Scene control: Conditional automations can be created between different Tuya / SmartWise devices

Electrical Functions

• Power supply: DC/AC 7–32V
• Switchable load: maximum 10A / 2200W
• Output type: Relay switch output
• Number of channels: 1–4 channels, depending on product version
• Default inching time: 1 second
• Adjustable inching time: 1–3600 seconds in the app
• Normal operating mode: The relay remains ON or OFF until the next control command
• Motor control mode: The 2-channel and 4-channel versions can be used for forward/reverse DC or AC motor control with suitable wiring
• Garage gate compatibility: Can be used with pulse-controlled gate openers; pedestrian gate and main gate functions are supported by versions with multiple outputs

Technical Specifications

• Product name: SmartWise Wi-Fi Switch Relay 7–32V / 220V Smart Relay RF 433
• Model: TYWR 7V–32V
• Product type: Wi-Fi + RF 433 MHz smart relay module
• Control app: Tuya Smart / Smart Life
• Wi-Fi standard: 2.4 GHz, IEEE 802.11 b/g/n
• RF communication: 433 MHz
• RF remote type: 433 MHz learning-code remote control support
• Power supply: DC/AC 7–32V
• Maximum current: 10A
• Maximum power: 2200W
• Number of channels: 1–4CH, depending on product version
• Dimensions: 69 × 41 × 20 mm
• Operating modes: Self-locking, inching
• Default pulse time: 1 second
• Adjustable pulse time: 1–3600 seconds
• Voice control: Amazon Alexa, Google Home
• Remote control: Via Tuya / Smart Life app
• Scheduling: Schedule and countdown supported
• Shared control: Yes
• Relay lifespan: More than 1,000,000 switching cycles
• Application area: DIY smart home automation, lighting, gate opener, door control, electric lock, water pump, smaller motorized and household devices
• Safety note: Professional installation is recommended for wiring

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