Wi-Fi PIR motion sensor PNI HS401

Product detailed description

This Wi-Fi-enabled PIR motion sensor is designed for integration into security and automation systems in commercial and residential environments. It is commonly installed in retail spaces, offices, and restricted access areas where motion detection and alarm functionality are required. The sensor operates on a 5V DC power supply via USB-C and communicates using the Tuya Smart app. It supports both alarm activation and welcoming audio cues, depending on the selected mode. The detection range of 8 meters and 110° angle ensures coverage of typical room layouts. The sensor is suitable for use in systems where remote monitoring and automated responses are required.

Technical parameters

EAN	5949066539022
Weight	0.116 kg
Code	PNI-HS401

The technical parameters define the sensor’s suitability for specific applications. The 80 dB alarm intensity ensures effective deterrence, while the 8-meter detection range and 110° angle are suitable for most indoor spaces. The 2.4 GHz Wi-Fi frequency ensures compatibility with standard home and office networks. The power consumption of ≤ 20 mA in standby and ≤ 60 mA during alarm operation is important for assessing the load on the power supply system.

Installation and connection

The sensor is mounted using the included mounting bracket and connected via a 5V USB-C power supply. The power adapter (230V to 5V 1A) is included in the package. The sensor should be positioned to cover the intended area without obstructions. Ensure the Wi-Fi signal is strong at the installation location for reliable connectivity. A common mistake is incorrect orientation, which can reduce detection effectiveness. Verify that the sensor is set to the correct mode (armed or disarmed) via the Tuya Smart app or the side button. Avoid placing the sensor near heat sources or direct sunlight, as this may affect performance.

Compatibility and accessories

The PNI HS401 is compatible with the Tuya Smart app (also known as Smart Life) for configuration and control. It requires a 5V USB-C power supply, which is included in the package. The sensor works with standard Wi-Fi networks operating on the 2.4 GHz frequency. Additional accessories such as extended mounting brackets or external speakers are not required for standard installations. No related products are specified for this model.

Technical background for designers

The sensor uses a passive infrared (PIR) sensor to detect changes in heat patterns caused by moving objects. The built-in speaker allows for audio alerts and greetings, which can be programmed via the app. The sensor is constructed with durable materials suitable for indoor use. The Wi-Fi module enables remote monitoring and control, making it suitable for integration into smart building systems. The sensor’s performance is affected by environmental factors such as temperature, humidity, and obstructions in the detection path. The USB-C power input ensures compatibility with a wide range of power sources.

Service and operation

The sensor requires minimal maintenance. Regularly check the power supply and Wi-Fi connectivity to ensure reliable operation. Verify that the alarm and audio functions are working correctly by testing the sensor in both armed and disarmed modes. No scheduled service intervals are specified in the product documentation. If the sensor fails to respond, check the power connection and Wi-Fi signal strength. Faulty operation may be resolved by resetting the device via the app or by reinitialising the Wi-Fi connection.

Frequently asked questions

Can the PNI HS401 be used with third-party smart home platforms?
Integration with third-party platforms is not specified. The sensor is designed for use with the Tuya Smart app.

Can the audio alerts be customised?
Audio alerts can be enabled, disabled, or customised via the Tuya Smart app. Pre-recorded messages or greetings can be configured.

Is the sensor suitable for outdoor use?
The sensor is designed for indoor use only. It is not weatherproof and should not be installed in outdoor environments.

Can the sensor be scheduled to activate at specific times?
Yes, the sensor can be programmed with a schedule via the Tuya Smart app to activate or deactivate at specific times.