Milesight NI301 4-in-1 Bathroom Odor and Gas Monitor Sensor
NI301 is a 4-in-1 LoRaWAN ® bathroom odor detector to detect ammonia (NH3) and hydrogen sulfide (H2S) gas according to electrochemical principle.

Details
- Category
- Accessories
- Catalog status
- Catalog sync 2026-06-01
Product Summary
NI301 is a 4-in-1 LoRaWAN ® bathroom odor detector to detect ammonia (NH3) and hydrogen sulfide (H2S) gas according to electrochemical principle.
Why It Matters
NI301 is a 4-in-1 LoRaWAN ® bathroom odor detector to detect ammonia (NH3) and hydrogen sulfide (H2S) gas according to electrochemical principle.
Editorial narrative
NI301 is a 4-in-1 LoRaWAN ® bathroom odor detector to detect ammonia (NH3) and hydrogen sulfide (H2S) gas according to electrochemical principle. NI301 is also able to detect temperature and humidity to fully aware of the environment of bathrooms. When the NH3 or H2S gas concentration reaches the preset threshold, the detector will trigger both LED light alarm and buzzer to notify people timely to ventilate, which is an important part in smart bathroom solution. Apart from local alarms, NI301 can also report the sensor data and alarm messages remotely by the use of LoRaWAN ® technology. Key Features 4-in-1 Sensors with High-Sensitivity: Integrated with ammonia (NH hydrogen sulfide (H₂S), temperature, and humidity sensors, allowing for comprehensive environmental monitoring and gas detection based on the electrochemical principle. Extended Data Transmission Range: Offers impressive data transmission range of up to 2 km in urban areas and up to 15 km in rural areas, ensuring reliable communication over long distances. Long Battery Life: Equipped with 4 x 4000 mAh ER18505 Li-SOCL2 batteries, providing a service life of up to 3 years, minimizing the need for frequent battery replacements. Damp Proof Coating: The device features a damp-proof coating, ensuring reliable performance even in various bathroom conditions where moisture may be present. Threshold Alarms with Buzzer and LED Indicator: Includes a built-in buzzer and LED indicator to promptly alert users of threshold alarms, allowing for immediate response to gas detection events. Wireless Power Supply: Built-in batteries enable wireless power supply, eliminating the need for complex wiring and reducing installation costs. NFC Configuration: Equipped with Near Field Communication (NFC) technology, enabling easy and convenient configuration using compatible NFC devices. LoRaWAN® Compatibility: Fully compliant with standard LoRaWAN® gateways and network servers, ensuring seamless integration into existing setups a
Facets
- Last verified: 2026-06-01
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Verification
Source: editorial review (2026-06-01).
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Confidence legend: ✓ editor-confirmed, ● vendor claim, ? inferred from product description.
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