Relative humidity and temperature sensor EM300-TH

wall-mountLoRaWANwireless

Overview
The Milesight EM300-TH is a LoRaWAN® temperature and humidity sensor designed for long-range environmental monitoring in indoor and outdoor commercial and industrial settings. It combines IP67 protection, NFC on-site configuration and long battery life with onboard data storage and retransmission to ensure data availability in intermittent networks.

Key Features

• Suitable for indoor and outdoor monitoring with IP67-rated enclosure
• NFC mobile configuration for on-site setup and batch template deployment
• On-device storage: up to 2,800 historical records and retransmission to avoid data loss
• EN12830 certification option for temperature monitoring (cold chain and similar uses)
• Ultra-low power design with up to 10 years battery life (depends on reporting interval and region)
• Compatible with Milesight IoT Cloud and Milesight Development Platform for device management and visualization

Operation & Deployment

• NFC-based configuration and power on/off using the Milesight ToolBox mobile app
• Multiple mounting options: wall screw, 3M tape and cable-tie mounting
• Supports regional LoRaWAN frequency bands and standard LoRaWAN® gateways and network servers

LoRaWAN & Connectivity
Standard LoRaWAN® connectivity with support for OTAA and ABP (Class A). Typical line-of-sight transmission ranges depend on environment (example: up to ~2 km in urban areas, up to ~15 km in open rural areas). Data retransmission feature and high gateway compatibility improve delivery reliability.

Datasaving / Cloud Integration
Integrates with Milesight Development Platform and Milesight IoT Cloud for dashboards, triggers, reports and API access. Supports payload decoder integration and firmware/SDK updates for platform-based management.

How NFC Configuration Works (summary)

• Install the Milesight ToolBox app on your smartphone
• Enable NFC and tap the phone to the device to read/write configuration
• Verify credentials and apply device parameters wirelessly

Documents & Support (product resources)
Datasheet, user guide, payload decoders and firmware/SDK resources are available for integration and deployment support.

Technical specifications

• Model: EM300-TH
• Measurements: temperature and humidity
• Temperature range: -30°C to +70°C; resolution 0.1°C; accuracy typ. ±0.6°C (-30°C ~ 0°C), ±0.3°C (0°C ~ 70°C)
• Humidity range: 0% to 100% RH; resolution 0.5% RH; accuracy typ. ±3% (10% ~ 90% RH @25°C), ±5% (other ranges)
• Wireless: LoRaWAN® (Milesight D2D supported)
• Frequency bands: CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
• Tx power: 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz)
• Sensitivity: -137 dBm @ 300 bps
• Mode: OTAA / ABP Class A
• Data storage: up to 2,800 historical records (on-device)
• Advanced features: threshold alarm, data retransmission, Milesight D2D controller support
• Power supply: 1 × 4000 mAh ER18505 Li-SOCL2 battery (8000 mAh dual-battery option available)
• Battery life: over 10 years (SF7, EU868 & US915; depends on reporting interval)
• LED/button: 1 internal LED indicator; 1 internal power/reset button
• Operating conditions: -30°C to +70°C; 0% to 100% RH (non-condensing)
• Ingress protection: IP67
• Housing: ABS + PC (flame retardant), white
• Weight: 95.6 g (with 1 battery)
• Dimensions: 88.5 × 85.3 × 27 mm
• Installation: wall screw, 3M tape, cable-tie mounting
• Approvals: CE, FCC, ISED, RCM, Telec, ISACA, EN12830; Environmental: RoHS