GS301 – Indoor LoRaWAN NH₃/H₂S Gas Detector – Milesight
General Description
The Milesight GS301 is a compact industrial gas detector capable of monitoring ammonia (NH₃) and hydrogen sulfide (H₂S) concentrations in indoor air. It incorporates high-precision electrochemical sensors and offers reliable data transmission via LoRaWAN® and Milesight D2D. Equipped with a buzzer and LED indicator for local alerts, it provides real-time monitoring in industrial buildings, farms, or laboratories.
Targeted Applications
- Air quality monitoring in industrial areas
- Gas leak detection in farms
- Laboratories and research facilities
- Water or waste treatment facilities
- Technical rooms or maintenance areas
Highlights
- Precise electrochemical sensors for NH₃ and H₂S
- Dual transmission technology: LoRaWAN® + D2D
- Local signaling via buzzer and alert LED
- Easy configuration by NFC via mobile application
- 3-year battery life with replaceable batteries
- Extended operating temperature range (-40°C to +55°C)
- Quick and easy wall installation
Technical Specifications
Wireless transmission |
Protocols |
LoRaWAN®, Milesight D2D |
Supported frequencies |
CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4 |
Transmit power |
16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz) |
Sensitivity |
-137 dBm |
Fashion |
OTAA / ABP – Class A |
Sensors |
Ammonia (NH₃) |
0 ~ 10 ppm, ± 5%, resolution 0.01 ppm |
Hydrogen sulfide (H₂S) |
0 ~ 5 ppm, ± 5%, resolution 0.001 ppm |
Detection principle |
Solid polymer electrochemical |
Long-term stability |
< 1% accuracy drift per month |
Temperature |
-40 to +85°C, accuracy ± 0.2°C, resolution 0.1°C |
Humidity |
0 ~ 100% RH, ± 2%, resolution 0.5% RH |
Physical characteristics |
Food |
4 × 4000 mAh ER18505 Li-SOCl₂ (replaceable) |
Autonomy |
About 3 years (10 min interval) |
Operating temperature |
-40°C to +55°C |
Relative humidity |
0% to 95% (non-condensing) |
Protection index |
IP30 |
Dimensions |
120 × 85 × 32.5 mm |
Material / Color |
Flame retardant PC+ABS, white |
Facility |
Wall mounting |
Interfaces and Connectors
The GS301 has an internal reset button, an audible (buzzer) and visual (LED) alert, and is configured via NFC with the Milesight ToolBox mobile app.
Pack Contents
- 1 × Milesight GS301 Gas Detector
- 4 × ER18505 Li-SOCl₂ Batteries
- 1 × Wall mounting kit
- 1 × Quick Start Guide