Milesight WS201 LoRaWAN Smart Fill Level Monitoring Sensor


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  • Free Shipping Total Purchase > RM150
  • Cash Back 1% of Total Purchase
  • 30 Days Return Policy
  • 1 Year Warranty
  • Refund Policy
  • Compact Design Suitable for Diverse Boxes
  • Accurate Fill Level Monitoring with ToF Technology
  • Up to 2 Years Battery Life with One Coin Cell Battery
  • Wireless Deployment and Easy Maintenance
SKU: MYP-MSG-038 Categories: ,

WS201 is a wireless fill-level monitoring sensor that securely monitors a small container’s fill level especially tissue boxes. Equip with the ToF technology with a high-focusing detecting range, WS201 is best suited for close-range sensing applications with great accuracy. Its ultra-low power consumption and standby mode ensure a durable battery life. With a special structure design and damp-proof coating, WS201canwork stably in the metal environment and multiple scenarios. Built-in NFC makes it more operable and easy to configure. Compatible with Milesight LoRaWAN® gateway and IoT Cloud solution, users can know the containers’ status and fill level in real-time and manage them effectively and remotely.

Main Features

  • High-focusing detection ranges from 1 to 55 cm with great accuracy based on Time-of-Flight technology
  • Non-contact detection with wireless deployment
  • Allow reporting the remaining amount by percentage with pre-set alarm thresholds
  • Ultra-low power consumption with standby mode, ensuring a durable battery life
  • Easy to install with its ultra-compact size and equip with NFC configuration
  • Highly adaptive to most tissue boxes with a stable signal
  • Damp-proof coating inside the device to ensure it works well in various conditions of bathrooms and other scenarios
  • Function well with standard LoRaWAN® gateways and network servers
  • Compliant with Milesight IoT Cloud

Accurate Monitoring with ToF Technology

WS201 utilizes advanced ToF (Time of Flight) technology for precise distance measurement, ensuring accurate detection of toilet paper fill levels. Additionally, it has a minimal blind zone of only 1 cm.

Flexible Paper Remaining Alerts

Optimize alerts and notifications for paper supply by implementing customizable threshold levels for greater flexibility.

Tailored Construction for Compactness

Ultra-thin body design effectively saves deployment space and adapts to various sizes of toilet paper boxes

Simplified Convenience at Its Finest

1   DevEUI QR code on the front for quick scanning
2   Buckle-open lid design for easy maintenance

Versatile Applications

Hibernate Mode

Schedule Hibernate Mode to align with scenarios such as mall closing and office hours ending.

Ultra Low Power Consumption

The WS201 is powered by a long-lasting coin cell battery that can last up to 2 years. This ensures uninterrupted usage and eliminates the need for frequent battery replacements.

LoRaWAN® Based

  • Penetrating Signals: data transmission range up to 2 km in urban areas and 15 km in rural areas
  • High Compatibility: compliant with standard LoRaWAN® gateways and network servers


NFC Configuration

Switching On/Off & Configuring the Devices Wirelessly





Wireless Transmission
Protocol LoRaWAN®
Frequency AS923-1&2&3&4
Tx Power 16 dBm (868 MHz)/22 dBm (915 MHz)/19 dBm (470 MHz)
Sensitivity -132dBm@300bps
Mode OTAA/ABP Class A
Distance Measurement
ToF FoV 25 °
FoV Accuracy ± 5 °
Detection Range 1 ~ 55 cm
Detection Accuracy ± 1cm
Detection Resolution ①1mm (1.0≤X≤15.0cm)
②2mm (15.0<X≤35.0cm)
③3mm (35.0<X≤55.0cm)
X = Detection Distance
Button 1 × Reset Button (Internal)
LED Indicator 1 × Indicator (Internal)
Configuration Mobile App (via NFC)
Physical Characteristics
Power Supply 1 × 590mAh CR2450 Lithium Battery
Battery Life1 2 Years
Operating Temperature -10°C ~ +60°C
Relative Humidity 0 ~ 95% (Non-condensing)
Color & Material White, ABS + PC (Flame Retardant)
Ingress Protection IP30
Dimension 66 × 38 × 12 mm (2.60 × 1.50 × 0.47 in)
Installation On the flat surfaces with 3M tapes
Warranty2 2 Years


Additional information
Weight 0.4 kg
Dimensions 19 × 12 × 6 cm
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