Capacitive Level Sensor

Keep Your Liquid Hand Wash Levels at Check

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  • Non-Contact Capacitive Sensing
  • Reliable Accuracy with Strong Anti-Interference Ability
  • Outstanding IP67 Rated Waterproof Performance
  • Flexible and Easy Installation
  • 10 Years Long Battery Life
  • LoRaWAN® Wireless Deployment
  • Remote Management via Milesight IoT Cloud
  • Easy NFC Configuration

Always Keeping an Eye on Your Hand Wash Levels

EM300-CL, the LoRaWAN® capacitive level sensor offers energy saving features that prolongs the battery life up to 10 years and can be seamlessly integrated with containers of distinct shapes and sizes, to facilitate better management and enhance user experience by keeping hand wash levels at check.


Non-Contact Capacitive Sensing
to Ensure Maximum Cleanliness

Powered by smart capacitive level detection that constantly monitors hand wash levels while maximizing its cleanliness by having no direct contact with the hand wash.

em300 cl capacitive level sensor non contact sensing

Reliable Accuracy with Strong Anti-Interference Ability

By relying on the principles of integrated contrast using dual electrode plates, it allows the device's anti-interference ability to skyrocket, ensuring data accuracy and on-time hand wash refills.

Outstanding IP67 Rated Waterproof performance

The device is boasted with high IP67 dust and waterproof rating, making it the perfect sensor in upgrading to a smarter and sustainable restroom.

em300 cl capacitive level sensor minimalist design2 em300 cl capacitive level sensor minimalist deesign

Minimalist & Ultra-Lightweight Design for Flexible and Easy Installation

Its minimalist and sleek design ensures that the sensor blends in well with the environment, making it almost invisible. Its light weighted design (82grams) also allows flexible and hassle-free installations in various distinct settings.

em300 cl capacitive level sensor smart restroom solution

Smart Restroom Solution

Pleasant restroom experience directly impacts an organization's image. Milesight's Smart Restroom Solution provides your smart building more insights to enhance restroom usage experience.

Get More Details

10 Years Long Battery Life

Enhanced with LoRaWAN® Technology, the battery-powered device can last up to 10 years even with a high collecting frequency every 10 minutes and 3 alerts a day. It further enhances energy-efficiency solutions, strive you a step forward towards a more sustainable tomorrow.

LoRaWAN® Wireless Deployment

Empowered with the advanced LoRaWAN® technology, it allows highly secured wireless data transmission, that prevents tampering of data and fussy tangling wires, ensuring simplified installation process and premium quality data.

Remote Monitoring via Milesight IoT Cloud

Milesight IoT Cloud allows access to all real-time data you need through any device (PC/Mobile). It keeps you updated with the latest hand wash level data and device status at anytime anywhere.

Easy NFC Configuration

Switching On/Off & Configuring the Devices Wirelessly

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1st Step

Install the
Milesight ToolBox

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2nd Step

Enable NFC and run ToolBox,
then attach your phone to the device

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3rd Step

Verify the password
and start configuring

Explore More About NFC Configuration >>

Versatile Installation

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Secured with 3M stickers

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Secured with plastic ties


Wireless Transmission
Tx Power16dBm(868 MHz)/20dBm(915 MHz)/19dBm(470 MHz)
Sensitivity-137dBm @300bps
ModeOTAA/ABP Class A
PrincipleCapacitive Level Sensor
Lead Length1m
Power On & OffNFC, Power Button (Internal)
ConfigurationNFC Configuration via Mobile App
Physical Characteristics
Power Supply1 × 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 Humidity0% to 95% (non-condensing)
Material & ColorTransceiver: ABS + PC, White
Electrode Pad: Black
Ingress ProtectionTransceiver: IP67
Electrode Pad: IP30
DimensionTransceiver: 105.6 × 85.2 × 27 mm (4.15 × 3.35 × 1.06 in)
Electrode Detection Sheet: 55 x 50 x 0.2mm (2.17 × 1.97 × 0.0079 in)
Weight110g (with 1 battery)
Installation*Transceiver: Wall Screw Mounting, 3M Tape Mounting
Electrode Pad: Cable-Tie Mounting, 3M Tape Mounting

* Tested under laboratory conditions and for guideline purposes only.
* Installation suggestion: Attach the electrode pad to the outer surface, aligning it with the bottom of the container to detect the liquid capacity.


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