EM300-CL Capacitive Level Sensor 

The EM300-CL is a precision capacitive level sensor that is used for precise, remote measurement of liquid and solid material levels in industrial and commercial storage systems. With advanced capacitive sensing, the EM300-CL measures level changes with ±1 cm accuracy, even in harsh environments with dust, vapor, or foam. Its LoRaWAN®-based wireless communication provides long-range data transmission with low power consumption, enabling up to 5 years of battery life per device.

This small, robust solution is perfect for industrial applications in sectors like agriculture, utilities, logistics, and manufacturing, allowing scalable, IoT-based level monitoring while keeping operational expenses low.

Key Features

High-Accuracy Capacitive Sensing

The EM300-CL capacitive level sensor offers highly accurate measurement of both liquid and solid material levels, delivering ±1 cm precision even in harsh and variable conditions. Unlike traditional sensors that struggle with environmental factors, this advanced device operates reliably independent of dust, humidity, vapor, or foam, making it ideal for a wide range of applications. Whether you’re monitoring water tanks, managing chemical storage, tracking oil levels, or controlling inventory in grain silos and powder bins, the EM300-CL ensures consistent, real-time level detection without interference.

Wireless LoRaWAN® Connectivity

Transmits over distances up to 10 km (line of sight) using LoRaWAN® networks, allowing simple integration with leading IoT platforms and central monitoring systems.

Long-Lasting Battery Life

Integrated lithium battery delivers up to 5 years of operation (6-hour reporting intervals), minimizing maintenance intervals and site visits.

Rugged, Weatherproof Design

Built to withstand the toughest conditions, the EM300-CL capacitive level sensor features an IP67-rated housing that ensures complete protection against dust ingress and water immersion, making it highly durable for both indoor and outdoor use. Its robust design allows the sensor to maintain stable and reliable performance even in harsh industrial environments, where exposure to moisture, dirt, and chemicals is common.

Compact and Flexible Installation

Small footprint with adhesive or mounting bracket mounts, enabling deployment in small or isolated areas with minimal wiring complications.

Certifications

CE and FCC compliant for assured, interference-free performance in commercial and industrial applications.

Unique Benefits

Reliable Performance in Harsh Environments

The EM300-CL capacitive level sensor delivers superior performance compared to traditional ultrasonic and optical level sensors, especially in challenging environments where dust, foam, or vapor typically cause measurement errors. Unlike ultrasonic sensors that struggle with acoustic interference and optical sensors that are easily obstructed by particles or condensation, the EM300-CL’s advanced capacitive sensing technology ensures consistent and accurate level detection even under adverse conditions.

Eliminates up to 80% of Manual Checks

Automates level monitoring to enable operators to sidestep manual checks, streamline delivery routes, and keep stockouts and overflows in check.

Low Total Cost of Ownership

Battery-powered, wireless design saves wire cost and keeps maintenance to a minimum, making it a flexible, cost-effective solution.

Seamless IoT Integration

The EM300-CL capacitive level sensor is designed for seamless integration with existing LoRaWAN infrastructure, allowing businesses to easily deploy it within their current wireless networks without the need for complex configuration or additional gateways. By supporting standardized LoRaWAN protocols, this sensor connects effortlessly to a wide range of cloud-based monitoring platforms and IoT applications, delivering real-time visibility of tank and silo levels across multiple remote sites.

Target Use Cases

Industrial Storage Monitoring

Monitors chemical tank levels accurately to avoid spills, ensure safety compliance, and schedule refills automatically.

Agriculture & Farming Operations

Tracks water tanks, fertilizer silos, and grain bins, avoiding overflows and reducing resource wastage in intelligent farming systems.

Utilities & Municipal Infrastructure

The EM300-CL capacitive level sensor plays a critical role in enabling remote monitoring of essential infrastructure such as water towers, sewage reservoirs, and utility storage tanks, providing cities and municipalities with real-time insights into resource levels. By delivering accurate, wireless data over LoRaWAN networks, this sensor supports the development of smart city applications where automated monitoring and control systems improve efficiency and service reliability.

Commercial & Logistics Facilities

Manages liquid and fuel storage in service stations and distribution centers, improving inventory visibility and ensuring prompt resupply.

IoT-Based Monitoring Networks

Perfect for large-scale deployment within industrial plants, farms, and municipal facilities to grant centralized control of resource levels.

Conclusion

The EM300-CL Capacitive Level Sensor provides a cost-efficient, reliable solution for remote level monitoring in industries. With ±1 cm accuracy, LoRaWAN® connectivity, and up to 5 years of battery life, it provides reliable performance even in the most extreme environments. By automating monitoring and minimizing manual checks, the EM300-CL assists companies in optimizing operations, saving costs, and streamlining resource management.

Call us today to find out how the EM300-CL can improve your level monitoring system.

Specifications

Wireless Transmission
Technology	LoRaWAN®
Frequency	CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx Power	16dBm(868 MHz)/20dBm(915 MHz)/19dBm(470 MHz)
Sensitivity	-137dBm @300bps
Mode	OTAA/ABP Class A
Detector
Principle	Capacitive Level Sensor
Lead Length	1m
Operation
Power On & Off	NFC, Power Button (Internal)
Configuration	NFC Configuration via Mobile App
Physical Characteristics
Power Supply	1 × 4000 mAh ER18505 Li-SOCL2 Battery (extendable to 2 batteries)
Battery Life*	>10 years (trigger 3 alarms per day, 25℃)
Operating Temperature	-20°C to +60°C
Relative Humidity	0% to 95% (non-condensing)
Material & Color	Transceiver: ABS + PC, White Electrode Pad: Black
Ingress Protection	Transceiver: IP67 Electrode Pad: IP30
Dimension	Transceiver: 105.6 × 85.2 × 27 mm (4.15 × 3.35 × 1.06 in) Electrode Detection Sheet: 56.8 x 25.5 x 0.2mm (2.24 × 1 × 0.0079 in)
Weight	110g (with 1 battery)
Installation*	Transceiver: Wall Screw Mounting, 3M Tape Mounting Electrode Pad: Cable-Tie Mounting, 3M Tape Mounting