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WS201-868M - Smart Fill Level Monitoring Sensor.
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Product Description
WS201-868M Smart Fill Level Monitoring Sensor is a compact, battery-powered LoRaWAN device for monitoring the remaining contents of small containers, particularly tissue boxes and toilet-paper dispensers.
Non-contact Time-of-Flight (ToF) sensing measures contents over a 1–55 cm range with ±1 cm accuracy , helping facility teams monitor consumption and schedule refills.
The WS201 reports the remaining fill level as a percentage and can generate alerts when preset low-level thresholds are reached.
With an ultra-compact 66 × 38 × 12 mm design, an internal antenna and damp-proof internal coating, it is suitable for a wide range of indoor restroom and dispenser-monitoring applications, including installations in metal dispenser environments.
Applications
Tank Level Monitoring
Water Level Monitoring
Non-Contact Distance Monitoring
Remote Water Monitoring
Utility Monitoring
Wireless Sensor Networking
Product Specifications
| Manufacturer / Brand | Milesight |
| Model / Part Number | WS201-868M |
| Product Type | Smart Fill Level Monitoring Sensor (ToF) |
| Target Application | Tissue box, toilet-paper dispenser and compact container fill-level monitoring |
| Sensing Technology | Time-of-Flight (ToF), non-contact |
| Detection Range | 1–55 cm |
| Measurement Accuracy | ±1 cm |
| Measurement Resolution | 1 mm |
| ToF Field of View | 25° |
| Field of View Accuracy | ±5° |
| Level Reporting | Remaining fill level in percentage; configurable low-level thresholds |
| Wireless Protocol | LoRaWAN® |
| Other WS201 Family Frequency Options | CN470, IN865, RU864, US915, AU915, KR920, AS923-1/2/3/4 (variant-dependent) |
| Transmit Power (868 MHz) | 16 dBm |
| Receiver Sensitivity | −132 dBm at 300 bps |
| LoRaWAN Activation / Class | OTAA/ABP Class A |
| Antenna | Internal |
| Configuration Methods | NFC mobile app or LoRaWAN downlink |
| Advanced Functions | Threshold alarms; hibernate / standby mode |
| Reset Button | 1 × internal reset button |
| LED Indicator | 1 × internal LED |
| Power Supply | 1 × 590 mAh CR2450 lithium coin-cell battery |
| Battery Life at SF7, EU868 | Approximately 3.6 years under defined laboratory test conditions |
| Battery Life at SF10, EU868 | Approximately 2.3 years under defined laboratory test conditions |
| OEM Battery Test Assumptions | 60-minute reporting interval, twice-daily low-paper alarm, 13 work hours per day, 25°C; actual results vary |
| Operating Temperature | −10°C to +60°C |
| Relative Humidity | 0–95% RH, non-condensing |
| Ingress Protection | IP30 |
| Protective Design | Damp-proof internal coating |
| Housing Material | White, flame-retardant ABS + PC |
| Product Dimensions | 66 × 38 × 12 mm |
| Net Weight (with / without battery) | 24.7 g / 18.1 g |
| Mounting Method | Flat-surface installation with 3M adhesive tape |
| Compatibility | Standard LoRaWAN® gateways/network servers, Milesight IoT Cloud and Milesight Development Platform |
| OEM Regulatory Approvals | CE, FCC |
| OEM Environmental Compliance | RoHS |
| India Deployment Note | EU868 is different from IN865; confirm radio variant, regional plan and applicable authorizations |
| TwoElectrons Warranty | 1 year |
Product Features
- Designed for non-contact monitoring of small containers, especially tissue boxes and toilet-paper dispensers.
- Time-of-Flight technology focuses sensing within 1–55 cm and helps measure remaining contents without direct contact.
- Detection accuracy is ±1 cm; 1 mm resolution; ToF field of view is 25° with FoV accuracy ±5°.
- Fill-level information can be reported as a percentage for consumption monitoring and refill planning.
- Configurable fill-level alarm thresholds help identify low consumable supplies.
- The requested WS201-868M model uses the EU868 / 868 MHz radio variant; verify that this specific regional plan is appropriate for the deployment.
- The WS201 family datasheet also lists CN470, IN865, RU864, EU868, US915, AU915, KR920 and AS923 regional variants; these are not interchangeable configurations by assumption.
- 868 MHz radio transmit power is 16 dBm; receiver sensitivity is −132 dBm at 300 bps.
- LoRaWAN® connectivity operates in OTAA/ABP Class A mode using an internal antenna.
- NFC enables mobile-app configuration; compatible LoRaWAN downlink enables remote configuration.
- Compatible with standard LoRaWAN gateways and network servers, Milesight IoT Cloud and Milesight Development Platform.
- Hibernate / standby mode and low-power design support long-lived coin-cell operation.
- The sensor requires one 590 mAh CR2450 lithium battery as its power source.
- Manufacturer laboratory battery-life estimates: approximately 3.6 years at SF7 EU868; 2.3 years at SF10 EU868 under specified reporting and alarm conditions.
- One internal reset button and one internal LED status indicator are included in the device.
- Internal damp-proof coating is provided for typical bathroom conditions; protection rating is IP30, not waterproof.
- Operating range is −10°C to +60°C and 0–95% relative humidity (non-condensing).
- Housing is white flame-retardant ABS + PC and measures 66 × 38 × 12 mm.
- Device weight is 24.7 g with battery and 18.1 g without battery.
- Install on a clean flat surface using appropriate 3M adhesive tape; confirm the tape supplied in the seller packing list.
- Suitable applications include smart restroom automation and dispenser monitoring in hotels, airports, malls, offices and commercial buildings.
- Manufacturer datasheet lists CE, FCC regulatory approvals and RoHS environmental compliance; check market-specific certification where required.
Package Includes
- 1 × Milesight WS201-868M Smart Fill Level Monitoring Sensor
- Power supply: 1 × 590 mAh CR2450 lithium coin-cell battery; confirm battery supplied/installed in the order packing list
- Mounting uses 3M adhesive tape; confirm tape inclusion and all accessories with supplier packing list
Frequently Asked Questions
What is the WS201-868M Smart Fill Level Monitoring Sensor used for?
What are the main features of the WS201-868M?
What battery does the WS201-868M use and how long can it last?
What wireless protocol and frequency does WS201-868M support?
What is included with the WS201-868M sensor?
Other Information
Warranty Information
1 Year Seller Warranty
This item is covered with a standard warranty of 1 year 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
- Non-contact Time-of-Flight (ToF) fill-level detection over a focused 1–55 cm range
- Measurement accuracy of ±1 cm and 1 mm resolution, per Milesight WS201 datasheet
- Measures and reports the remaining amount in a container as a percentage
- Adjustable low-level thresholds help automate refill alerts
- LoRaWAN® 868 MHz (EU868) long-range wireless connectivity with an internal antenna
- LoRaWAN OTAA/ABP Class A operating modes
- Configure locally with NFC mobile app or remotely by LoRaWAN downlink
- Low-power design powered by one 590 mAh CR2450 lithium coin-cell battery
- Approximately 3.6 years battery life at SF7 EU868 in the specified OEM laboratory scenario
- Ultra-compact 66 × 38 × 12 mm enclosure; weight 24.7 g with battery
- Internal damp-proof coating helps performance in restroom and metal-dispenser installations
- Indoor IP30 construction; mount to flat surfaces with 3M tape
- Works with compatible Milesight and standard LoRaWAN gateways / network servers
- Smart restroom monitoring in airports, hotels, malls, offices and commercial buildings
SKU: 2ESE2102
₹ 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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