Smart WiFi liquid level sensor Tuya, ultrasonic, 433MHz, with app and alarms

The smart liquid level sensor allows you to remotely monitor the filling of a water or other liquid tank directly from your phone. Using ultrasonic technology and the Tuya Smart or Smart Life app, the liquid level sensor accurately measures the level from 0.1 to 5 meters and sends notifications about critical levels. It is ideal for tanks, reservoirs, or wells, both indoors and outdoors.

Liquid level sensor - key features

• Remote control through the app — Monitor the tank filling at any time via the Tuya Smart or Smart Life app from your phone.
• High accuracy — Ultrasonic measurement with an accuracy of ±0.02m ensures reliable data about the liquid level.
• WiFi and RF433MHz connectivity — The sensor transmits data up to 100m without obstacles, while the gateway communicates with the router up to 30m.
• Resistance to moisture and temperature — IP65 protection and operation from -20°C to +70°C allows use both outdoors and indoors.
• Alarm system — The app alerts you to critical liquid levels, helping to prevent tank overflow or emptying.
• Simple installation — Includes screws, gasket, and adapter, so it can be installed without additional accessories.

Technical specifications

Tuya WiFi+RF liquid level sensor kit (with display):

• App name: Tuya Smart or Smart Life
• WiFi frequency: 2.4GHz IEEE 802.11b/g/n
• Power supply: 5V/1A
• WiFi connection: between the gateway and the router (up to 30m without obstacles)
• RF433MHz communication: between the sensor and the gateway (up to 100m without obstacles)
• Gateway network mode: 2.4G WiFi + RF433MHz
• RF433MHz sensor adapter: AC 110V~240V
• Sensor input power: ≤100mA @ 5V DC
• Network mode: RF433MHz
• Level measurement range: 0.1m-5m
• Mounting height: up to 5m
• Accuracy: ±0.02m
• Operating temperature: -20°C~+70°C
• Operating humidity: 0%~99%
• Protection class: IP65
• Reset button: press for 5 seconds
• Configuration: LED flashes quickly
• Connected: LED is on continuously
• Disconnected: LED flashes slowly

Tuya WiFi liquid level sensor (without display):

• App name: Tuya Smart or Smart Life
• WiFi or Zigbee frequency: 2.4GHz IEEE 802.11b/g/n or Zigbee 3.0
• Power supply: 5V/1A
• Current: ≤100mA
• Communication technology: 2.4G WiFi
• Level measurement range: 0.1m-5m
• Mounting height: up to 5m
• Accuracy: ±0.02m
• Operating temperature: -20°C~+70°C
• Protection class: IP65
• Reset button: press for 5 seconds
• Configuration: LED flashes quickly
• Connected: LED is on continuously
• Disconnected: LED flashes slowly

Who is it suitable for and how to use it?

The liquid level sensor is designed for homeowners, farmers, and businesses who want to monitor the level of water tanks, wells, or reservoirs without having to access the tank itself. The device is mounted above the tank, connected to the WiFi network via an app, and then automatically sends data and alarms about critical levels. Suitable for both domestic and industrial use, indoors and outdoors.

Buyer questions

Q: What is the maximum operating distance of the sensor from the gateway?
The RF433MHz sensor can communicate with the gateway up to 100 meters away, provided there are no obstacles between them. The gateway communicates with the router up to 30 meters away.

Q: Can the sensor be used outdoors?
Yes, the sensor has an IP65 protection rating and operates in temperatures from -20°C to +70°C, making it suitable for use both outdoors and indoors in various weather conditions.

Question: How do I know if the sensor is connected to the network?
The device has an LED indicator: when connected, the light is on continuously; when not connected, it flashes slowly; and during configuration, the light flashes quickly.

This liquid level sensor is a reliable solution for those who want to remotely monitor the filling of tanks at home or on the farm. The accurate, moisture-resistant, and easy-to-install liquid level sensor helps to avoid unexpected losses.

Sources: Level sensor | TopSmart store