Temperature & humidity sensor Milesight EM300TH915M

The Milesight EM300TH915M Temperature & humidity sensor is a freestanding indoor/outdoor detector designed for continuous environmental monitoring. It uses a high-sensitivity Sensirion sensor to measure temperature in the range −30°C to 70°C and relative humidity from 0% to 100% RH. The device stores up to 2800 historical records locally and features an IP67-rated enclosure for use in a wider range of applications. Configuration and power control are performed via NFC from a mobile phone or PC.

Advantages

This sensor provides high accuracy readings (±0.3°C for temperature and ±3% RH for humidity) thanks to the integrated Sensirion element. Its IP67 waterproof housing allows outdoor or harsh-environment deployment. Local storage of up to 2800 data sets ensures traceability because stored records cannot be manually deleted. The device supports data retransmission to improve reliability when network interruptions occur.

Suitable for

• Indoor climate monitoring in offices, server rooms and warehouses
• Outdoor environmental monitoring in sheltered installations
• Cold chain monitoring for storage and transport
• Industrial and agricultural humidity and temperature tracking

Key specifications

• Temperature range: −30°C to 70°C
• Humidity range: 0% to 100% RH
• Temperature accuracy: ±0.3°C
• Humidity accuracy: ±3% RH
• Local storage capacity: 2800 historical records
• Ingress protection: IP67
• Configuration and control: NFC via mobile phone or PC
• Model: Milesight EM300TH915M

How to use

Place the EM300TH915M sensor in the required location, ensuring the enclosure is properly sealed for outdoor use. Use an NFC-enabled mobile phone or PC to power on the device and complete initial configuration, including reporting intervals and network settings. After setup the sensor will record temperature and humidity readings and store up to 2800 data sets locally while transmitting data to the server according to the configured schedule.

Recommendations

Install the sensor away from direct heat sources, direct sunlight and strong drafts to obtain representative temperature and humidity readings. For long-term outdoor installations, check the mounting and seals periodically and ensure NFC configuration is performed in close proximity to the device.