Environment Monitoring Sensor

EM300 is a compact LoRaWAN® pulse counter which transforms
traditional water meters into wireless intelligent meters. With IP67
waterproof design, it is applicable in various harsh application
environments.
In addition to LoRaWAN® technology with low power consumption, it
has a built-in high-capacity battery available for several years without
replacement. Moreover, EM300-DI is compatible with both Milesight
LoRaWAN® gateway and Milesight IoT Cloud to achieve remote
monitoring and visualized smart data management to achieve the
purpose of saving water. It is suitable for both indoor and outdoor
applications such as agricultural irrigation, industrial water use,
property meter reading and numerous scenarios.

• Features
  - Flexible counting configuration to enable, stop, clear accumulated values
  - Support digital filtering that filters interference signals to ensure more accurate counters
  - Support to calculate water consumption and send water flow/outage alarms
  - Embedded with temperature and humidity sensors for environment monitoring
  - IP67 waterproof enclosure for harsh environment applications
  - Ultra-wide-distance transmission up to line of sight of 10km
  - Store more than 1000 historical records and support retransmission to prevent data loss
  - Support Milesight D2D protocol to enable ultra-low latency and direct control without gateways
  - A built-in 4000 mAh replaceable battery and works for 5 years without replacement

Milesight EM Series – LoRaWAN® Environment Sensors

EM310-UDL – Ultrasonic Distance / Level Sensor

Applications
Waste bin fill level, container monitoring, water tank level, manhole monitoring

Key Specifications

• Sensor Type: Ultrasonic (non-contact)

• Measuring Range: 3 – 450 cm

• Accuracy: ±(1 + 0.3% × Distance) cm

• Resolution: 1 mm

• Beam Angle: 60°

• Built-in Sensor: 3-axis accelerometer (tilt detection)

Wireless & Power

• Wireless Protocol: LoRaWAN® Class A

• Frequency Bands: EU868 / US915 / AS923 / AU915 / CN470

• Tx Power: Up to 22 dBm

• Power Supply: 2 × ER17505 Li-SOCl₂ batteries

• Battery Life: Up to 10 years (typical usage)

Environmental

• Operating Temperature: -15°C to +60°C

• Humidity: ≤ 90% RH (non-condensing)

• Ingress Protection: IP67

• Housing: ABS, Black

EM300-ZLD – Zone Leak Detection Sensor (Cable Type)

Applications
Data centers, equipment rooms, pipelines, raised floors

Key Specifications

• Leak Detection Type: Conductive zone leak detection

• Alarm Trigger: Liquid level ≥ 5 mm

• Sensing Cable Length: 3 m (extendable)

• Built-in Sensors: Temperature & Humidity

Temperature & Humidity

• Temperature Range: -30°C to +70°C

• Temperature Accuracy: ±0.3°C (0–70°C)

• Humidity Range: 0–100% RH

• Humidity Accuracy: ±3% RH (10–90%)

Wireless & Power

• Wireless Protocol: LoRaWAN® Class A + Milesight D2D

• Frequency Bands: EU868 / US915 / AS923 / AU915 / CN470

• Power Supply: ER18505 Li-SOCl₂ battery

• Battery Life: Up to 10 years (typical usage)

Environmental

• Ingress Protection: IP67

• Housing: Flame-retardant ABS + PC

• Color: White

EM300-SLD – Spot Leak Detection Sensor (Probe Type)

Applications
Server racks, cabinets, HVAC systems, water leakage points

Key Specifications

• Leak Detection Type: Conductive spot detection

• Alarm Trigger: Liquid level ≥ 5 mm

• Probe Cable Length: 1.5 m

• Built-in Sensors: Temperature & Humidity

Temperature & Humidity

• Temperature Range: -30°C to +70°C

• Temperature Accuracy: ±0.3°C

• Humidity Range: 0–100% RH

• Humidity Accuracy: ±3% RH (10–90%)

Wireless & Power

• Wireless Protocol: LoRaWAN® Class A + Milesight D2D

• Frequency Bands: EU868 / US915 / AS923 / AU915

• Battery: ER18505 Li-SOCl₂

• Battery Life: Up to 10 years

Environmental

• Ingress Protection: IP67

• Probe Material: Stainless Steel

• Housing Color: White

EM300-MCS – Magnetic Contact Switch with Temperature & Humidity

Applications
Door/window monitoring, cold rooms, warehouses, security systems

Key Specifications

• Detection Type: Magnetic contact (open / close)

• Detection Distance: 20 – 30 mm

• Cable Length: 1.5 m

• Built-in Sensors: Temperature & Humidity

Wireless & Power

• Wireless Protocol: LoRaWAN® Class A + Milesight D2D

• Frequency Bands: EU868 / US915 / AS923 / AU915

• Battery: ER18505 Li-SOCl₂

• Battery Life: Up to 10 years

Environmental

• Operating Temperature: -30°C to +70°C

• Ingress Protection: IP67

• Housing: ABS + PC

• Color: White

EM300-DI Series – Digital Input / Pulse Counter Sensor

Applications
Water meters, gas meters, energy meters, industrial counters

Key Specifications

• Input Type: Digital Input / Pulse Counter

• Input Frequency: Up to 2000 Hz

• Minimum Pulse Width: 250 μs

• Interface: GPIO (dry contact)

• Built-in Sensors: Temperature & Humidity

Wireless & Power

• Wireless Protocol: LoRaWAN® Class A + Milesight D2D

• Frequency Bands: EU868 / US915 / AS923 / AU915

• Battery: ER18505 Li-SOCl₂

• Battery Life: Up to 5 years (typical usage)

Environmental

• Operating Temperature: -30°C to +70°C

• Humidity: ≤ 95% RH (non-condensing)

• Ingress Protection: IP67

• Housing: Flame-retardant ABS + PC