PST WSD400H Tuya Smart WiFi Temperature Humidity Sensor with LCD Display - 2.4GHz WiFi, ABS Housing
PST WSD400H Tuya Smart WiFi Temperature Humidity Sensor with LCD Display - 2.4GHz WiFi, ABS Housing - Image 2
PST WSD400H Tuya Smart WiFi Temperature Humidity Sensor with LCD Display - 2.4GHz WiFi, ABS Housing - Image 3
PST WSD400H Tuya Smart WiFi Temperature Humidity Sensor with LCD Display - 2.4GHz WiFi, ABS Housing - Image 4
SKU: SENS-3390
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PST WSD400H Tuya Smart WiFi Temperature Humidity Sensor with LCD Display - 2.4GHz WiFi, ABS Housing

â‚č1,179.00 (Inclusive of all taxes)
Out of Stock

The PST WSD400H is a Tuya Smart-enabled WiFi temperature and humidity sensor featuring a real-time LCD display, designed for seamless integration into smart home ecosystems via the Tuya app for remote monitoring and automated climate control.

Features

  • Real-time LCD display for immediate temperature and humidity readings.
  • Tuya Smart WiFi integration for remote monitoring and control via smartphone app.
  • Customizable scene automation to trigger other smart devices based on set thresholds.
  • Built-in low-battery detection and audible alarm (55dB) for alerts.
  • Compact ABS housing with wide operating range (-10°C to +55°C, 0-99% RH).

Out of stock

Description

The PST WSD400H sensor utilizes integrated sensing elements to provide accurate ambient temperature and relative humidity measurements, displayed on a built-in LCD screen. It connects directly to 2.4GHz WiFi networks using the IEEE 802.11 b/g/n standard, enabling integration with the Tuya Smart ecosystem for comprehensive smart home automation.

This sensor supports programmable automation rules, allowing it to act as a trigger for other Tuya-compatible devices—such as activating fans, dehumidifiers, or HVAC systems—when preset temperature or humidity limits are exceeded. Its design prioritizes user awareness with configurable alerts and a clear visual display, making it suitable for maintaining optimal environmental conditions in residential or light commercial settings.

Key Features

  • Integrated LCD screen for at-a-glance monitoring of temperature and humidity.
  • Direct 2.4GHz WiFi connectivity eliminates the need for a separate gateway.
  • Supports Tuya Smart app for remote data viewing, historical logging, and alert configuration.
  • Scene automation engine enables conditional control of linked smart home devices.
  • Audible (55dB) and push notification alerts for out-of-range conditions.
  • Low-power design with built-in battery status detection (uses 2x LR03 cells).
  • Durable ABS plastic housing suitable for indoor environmental monitoring.
  • Wide detection range covering typical residential and office climates.

Applications

  • Smart home climate monitoring and automated HVAC control.
  • Indoor air quality management in bedrooms, living rooms, and offices.
  • Preventive monitoring for humidity-sensitive environments like wine cellars, libraries, or server rooms.
  • Integration into Tuya-based home automation scenes for comfort and energy efficiency.
  • Remote environmental monitoring for vacation homes or rental properties.

Technical Specifications

Item TypeTemperature & Humidity Sensor
Model NumberPST WSD400H
Housing MaterialABS Plastic
Power Supply2 x LR03 (AAA) Batteries (Built-in)
Wireless StandardIEEE 802.11 b/g/n (2.4GHz only)
Temperature Detection Range-10°C to +55°C
Humidity Detection Range0% to 99% RH
Operating Temperature-10°C to +60°C
Alarm Sound Level55 dB
Dimensions (L x W)74 mm x 74 mm
Product Weight89 g
ColorWhite

Frequently Asked Questions

Does the PST-WSD400H require a separate hub or gateway to work?

No, the sensor connects directly to your 2.4GHz WiFi network and communicates with the Tuya Smart cloud platform. It does not require a separate gateway or hub, but it must be configured and controlled through the Tuya Smart mobile application.

What is the power source and battery life for this sensor?

The sensor is powered by two built-in LR03 (AAA) batteries. It features low-battery detection, which will send an alert through the Tuya app. Actual battery life depends on factors like WiFi signal strength, reporting frequency, and how often the audible alarm is triggered.

Can I create automation rules with this sensor?

Yes, using the Tuya Smart app, you can create automation scenes. For example, you can set the sensor to trigger a connected smart plug, fan, or humidifier when the temperature exceeds 28°C or humidity falls below a set percentage, enabling fully automated environmental control.

What is the wireless range and compatibility of this sensor?

The sensor uses standard 2.4GHz WiFi (802.11 b/g/n). Its effective range depends on your router's signal strength and indoor obstacles. It is compatible only with 2.4GHz networks and requires the Tuya Smart app for setup and operation; it does not support Bluetooth, Zigbee, or 5GHz WiFi.

Package Includes

  • 1 x PST-WSD400H WiFi Temperature Humidity Sensor
  • 2 x LR03 (AAA) Batteries
  • 1 x User Manual

Additional Information

Weight 0.089 kg
Dimensions 7.4 × 7.4 cm

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