Qantec Automation

Milesight GS301 – Smart Bathroom Odour Detector

The GS301 is a cutting-edge 4-in-1 bathroom odor detector, utilizing LoRaWAN® technology for thorough environmental monitoring. It detects ammonia and hydrogen sulfide gases while also gauging temperature and humidity. With remote data relay and device-to-device capabilities, it ensures optimal bathroom conditions.



Experience unparalleled hygiene and comfort with GS301 – your ultimate 4-in-1 bathroom odor detector and environmental monitor

This multifaceted LoRaWAN® device offers comprehensive environmental awareness, detecting ammonia (NH3) and hydrogen sulfide (H2S) gases while also measuring temperature and humidity levels.

Equipped with advanced electrochemical sensors, the GS301 ensures timely alerts with LED light and buzzer alarms when gas concentrations surpass preset thresholds, contributing to smart bathroom solutions. It also enables remote sensor data relay and alarm messaging via LoRaWAN® technology, allowing for monitoring and control from anywhere when integrated with Milesight LoRaWAN® gateway and IoT Cloud solution.

Supporting Milesight Device-to-Device (D2D) function for ultra-low latency control without gateways, the GS301 offers a comprehensive solution for maintaining optimal bathroom conditions, embracing the future of bathroom comfort.



  • High-precision electrochemical gas detection sensor with over three years lifespan
  • Multi-sensor capabilities including NH3, H2S, temperature, and humidity detection
  • Wireless operation with built-in batteries, reducing installation costs
  • LED indicator and buzzer for alerting users
  • Damp-proof coating for consistent performance in various conditions
  • Milesight D2D protocol for direct ventilation control
  • Built-in NFC functionality for easy configuration
  • Compatible with standard LoRaWAN® gateways and network servers
  • Quick and easy device management through Milesight IoT Cloud solution.

Comprehensive monitoring with 4-in-1 sensors for NH3, H2S, temperature, and humidity ensures easy installation and maintenance. The GS301 operates on the electrochemical principle with ±5% accuracy for NH3 and H2S, with customisable alarm thresholds for enhanced safety.

Smart HVAC integration optimises ventilation based on detected gas concentrations, ensuring a fresher, clearer bathroom environment. Leveraging Milesight D2D with LoRa® ensures superior ventilation control with secure data transmission and reduced investment costs.