Magnetic Contact Switch

Safeguard Your Space with Ease

CoWork Series
ws301 magnetic contact switch 1
ws301 magnetic contact switch 2
ws301 magnetic contact switch 3
  • Safeguard Against Unexpected Entry
  • Wire-Free and Effortless Installation
  • Long-Lasting Battery Life of 4-7 Years
  • Simplified NFC-Based Configuration
  • Home
  • IoT LoRaWAN® Series
  • WS301

Trusted Sentinel for Every Door and Window

WS301 offers dependable security monitoring for doors and windows by detecting opening and closing events, effectively alerting against intrusion or unauthorized entry.

ws301 magnetic contact switch safety
ws301 magnetic contact switch temper detection

Uncompromising Security
with Tamper Detection

With its advanced tamper detection functionality, the WS301 promptly alerts administrators to any attempts to dismount the device, ensuring enhanced security.

Stay Powered Up for Longer

WS301 offers over 4 years of service life without the need for battery replacement.

Maximize Convenience with Minimal Size

WS301 is a compact and versatile device that can be effortlessly installed on a wide range of doors and windows, providing unparalleled convenience.

Smart Restroom Solution

To make it right and easy, Milesight Smart Restroom Solution provides IoT insights into the status of cleanliness and hygiene.

Get More Details

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

Milesight D2D Communication

Milesight D2D (Device to Device) communication protocol featuring LoRa® enables communication among different Milesight LoRaWAN® node devices without a LoRaWAN® gateway.

Lower Latency

Less than 1 Second
Response Time


Investment Cost

ws301 magnetic contact switch 4


Milesight D2D

arrow arrow arrow
uc300 iot controller



arrow arrow arrow
ws301 magnetic contact switch alarm bulb

Alarm Bulb

Learn More

Cloud Data Management
Milesight IoT Cloud

  • Data Visualization Dashboard:
    All figures in a glance
  • Automatic Triggers:
    Interactive collaboration with Milesight IoT sensors
    to realize scene-based automation
  • Regular Reports & Real-Time Alerts:
    Data-based insights
  • Android & iOS App:
    Manage devices at your fingertips

NFC Configuration

Switching On/Off & Configuring the Devices Wirelessly

ws301 magnetic contact switch nfc configuration 1

1st Step

Install the
Milesight ToolBox

ws301 magnetic contact switch nfc configuration 2

2nd Step

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

ws301 magnetic contact switch nfc configuration 3

3rd Step

Verify the password
and start configuring

Explore More About NFC Configuration >>


ws301 magnetic contact switch installation 1

Double-Sided Tape Mounting

ws301 magnetic contact switch installation 2

Screw Mounting


Wireless Transmission
TechnologyLoRaWAN® , Milesight D2D
Tx Power16 dBm (868 MHz)/22 dBm (915 MHz)/19 dBm (470 MHz)
Sensitivity-137 dBm @300bps
ModeOTAA/ABP Class A
Measurement and Interface
Detection Distance10-15 mm
Button1 × Reset Button (Internal), 1 × Tampering Button
LED Indicator1
ConfigurationNFC Configuration via Mobile App
AlarmsOpen/Close Status, Tamper
Advanced FeatureMilesight D2D Controller
Physical Characteristics
Power Supply1 × 1200 mAh ER14250 Li-SOCl2 Battery
Battery Life*Over 5 years (1080 min interval + 30 triggers per day)
Operating Temperature-20°C to +60°C
Relative Humidity≤90% (non-condensing)
Ingress ProtectionIP20
DimensionSensor: 50.5 × 31 × 18.5 mm (1.99 × 1.22 × 0.73 in)
Magnet: 30 × 13.5 × 10 mm (1.18 × 0.53 × 0.39 in)
InstallationOn the flat surfaces with screws or 3M tapes


*Your Email


*Your Phone


*Your Website

*Business Type

*What Product are You Interested in?


*Verification Code

Verify Code

If you are interested in Milesight, please leave us a message.

Verify Code

Contact Us

Contact Us

Verify Code

Contact Us to Get More Information