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WS201-915M - Smart Fill Level Monitoring Sensor.

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Milesight WS201 Smart Fill Level Monitoring Sensor

Product Description

WS201 is a wireless fill-level monitoring sensor for small containers, especially tissue boxes and toilet paper dispensers. Its Time-of-Flight (ToF) technology provides accurate, focused close-range detection. Ultra-low power consumption and hibernate mode help extend battery life.

A compact structure and internal damp-proof coating support stable operation in metal dispensers and bathroom environments. Built-in NFC simplifies configuration. With compatible Milesight LoRaWAN® gateways and Milesight Development Platform, users can monitor container status and remaining fill levels remotely. Applications include airports, hotels, shopping malls and scenic attractions.

Product Specifications

ModelWS201-915M
ProtocolLoRaWAN®; OTAA/ABP Class A
AntennaInternal
Frequency915 MHz variant; confirm regional plan. Family supports CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
Tx power22 dBm at 915 MHz
Sensitivity-132 dBm @300 bps
MeasurementTime-of-Flight (ToF), non-contact
Detection range1–55 cm
Accuracy / Resolution±1 cm / 1 mm
Field of view25°; accuracy ±5°
Controls / Indicators1 internal reset button; 1 internal LED indicator
ConfigurationMobile app via NFC or LoRaWAN downlink
Advanced featuresThreshold alarm; hibernate mode
Power1 × 590 mAh CR2450 lithium battery
Battery lifeUp to 2 years advertised. Supplied datasheet estimates 3.6 years at SF7 (EU868/US915), 2.3 years at SF10 EU868, or 2.7 years at SF10 US915: 60-minute reporting, lack-of-paper alarm twice daily, 13 working hours/day, 25°C. Actual performance varies.
Temperature-10°C to +60°C
Humidity0–95%, non-condensing
ProtectionIP30; internal damp-proof coating
HousingWhite, flame-retardant ABS + PC
Dimensions66 × 38 × 12 mm
Weight24.7 g with battery; 18.1 g without
MountingFlat surfaces with 3M tape
ApprovalsCE, FCC; RoHS

Product Features

  • Focused ToF detection from 1 to 55 cm with high accuracy
  • Non-contact detection with wireless deployment
  • Reports remaining amount as a percentage with preset alarm thresholds
  • Ultra-low power consumption and standby/hibernate mode extend battery life
  • Ultra-compact design with NFC configuration for easy installation
  • Adapts to most tissue boxes with stable wireless signal
  • Internal damp-proof coating supports bathroom and other indoor environments
  • Works with standard LoRaWAN® gateways and network servers
  • Compatible with Milesight IoT Cloud and Milesight Development Platform

Package Includes

  • 1 × WS201-915M Smart Fill Level Monitoring Sensor
  • 1 × CR2450 lithium battery (device power supply)
  • Mounting accessory contents to be confirmed with supplied package

Frequently Asked Questions

What is the WS201-915M - Smart Fill Level Monitoring Sensor. used for?
WS201 is a wireless fill-level monitoring sensor for small containers, especially tissue boxes and toilet paper dispensers. Its Time-of-Flight (ToF) technology provides accurate, focused close-range detection. Ultra-low power consumption and hibernate mode help extend battery life.
What are its main features?
Suitable for diverse toilet paper dispensers; Accurate fill-level monitoring with ToF technology; Up to 2 years battery life with one coin-cell battery; Wireless deployment and easy maintenance.
What are the power or battery requirements?
Battery life: Up to 2 years advertised. Supplied datasheet estimates 3.6 years at SF7 (EU868/US915), 2.3 years at SF10 EU868, or 2.7 years at SF10 US915: 60-minute reporting, lack-of-paper alarm twice daily, 13 working hours/day, 25°C. Actual performance varies.. Match the supply or charger to these specifications before connecting the product.
Which interfaces or communication protocols does it use?
Protocol: LoRaWAN®; OTAA/ABP Class A. Check that your host, gateway or controller supports the listed interface and required configuration.
What is included in the package?
1 × WS201-915M Smart Fill Level Monitoring Sensor. 1 × CR2450 lithium battery (device power supply). Mounting accessory contents to be confirmed with supplied package.

Other Information

Applications: tissue and toilet paper dispenser monitoring in airports, hotels, shopping malls, scenic attractions and smart buildings.

Indoor IP30 device; mount on a flat surface with 3M tape and position the ToF detector within its specified sensing range.

Shipping & Returns: subject to the current TwoElectrons Shipping & Returns Policy displayed on the website. Delivery schedule and freight confirmed at ordering.

Warranty Information

6 Months Seller Warranty

This item is covered with a standard warranty of 6 months from the time of delivery against manufacturing defects only. This warranty is given for the benefit of TwoElectrons customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What Voids Warranty

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Shipping & Returns Policy

Shipping Policy:
  • In-stock items are delivered within 7-10 working days for orders within India. Delivery varies based on location and courier service.
  • In-stock items are delivered within up to 20 working days for orders outside India. Delivery varies based on location and courier service.
  • If the item is out of stock, you can still place an order. The estimated delivery time will be notified to you by email.
Return & Refund Policy:
  • Return window: 7 days from receipt unless stated otherwise.
  • No refunds or replacements after the return window.
  • Returns are accepted only for non-working or damaged products.
  • Initiate return requests from here: Return Request or contact us at 09831070550.
  • Refunds are processed within 3-4 working days after inspection and approval.

Main Features

  • Suitable for diverse toilet paper dispensers
  • Accurate fill-level monitoring with ToF technology
  • Up to 2 years battery life with one coin-cell battery
  • Wireless deployment and easy maintenance
SKU: 2EMK2267
₹ 16,548.00
For bulk orders, volume pricing & B2B enquiries, contact our team →

Lead time

QUANTITY DISPATCH
1-10 units Order from India: 7-10 working days
Order outside India: Up to 20 working days
10+ units To be negotiated
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