WS301 Magnetic Contact Switch

WS301 Magnetic Contact Switch


LoRaWAN® wifi free

Magnetic Contact Switch - WS301

  • 100% Wire-Free
  • 4~7 Years Battery Life
  • Simple Installation
  • Easy Configuration (Via NFC)



WS301 Magnetic Contact Switch WS301 Magnetic Contact Switch WS301 Magnetic Contact Switch


A Reliable Guardian for Every Door and Window

The WS301 door sensor can be mounted on any doors or windows to detect an opening or closing event. It adds physical security monitoring to your location by warning of intrusion or unauthorized entry.



Tamper Detection

Alerting administrator to any attempts to dismount the device




WS301 Magnetic Contact Switch


Long Battery Life
More than 4 years service life without battery replacement


Easy Installation

WS301 Magnetic Contact Switch

Double-Sided Mounting Tape

WS301 Magnetic Contact Switch


Easy to Use

Switching on/off and configuring the device via NFC technology from mobile phone or PC

1st Step
Install the Milesight ToolBox (Android/iOS).

2st Step
Turn on NFC and attach
the sensor to the NFC area

3st Step
Configure your sensor

Milesight IoT Cloud

  • Monitoring door/window status for unauthorized entry
  • Interactive cooperation with a variety of Milesight sensors
  • Android & iOS versions allow you to manage devices at your fingertips


Minimal Size

Wireless Transmission Technology LoRaWAN® v1.0.2/v1.0.3/v1.1
Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923
Tx Power 16 dBm (868 MHz)/22 dBm (915 MHz)/19 dBm (470 MHz)
Sensitivity -137 dBm @300bps
Mode OTAA/ABP Class A
Measurement and Interface Detection Distance 15-20 mm
Button 1 × Power Button (Internal), 1 × Tampering Button
Operation Configuration Mobile App (via NFC) or PC software (via USB Type-C)
Alarms Open/Close Status, Tamper, Low Battery
Physical Characteristics Power Supply 1 × 1200 mAh ER14250 Li-SOCl2 battery
Battery Life 4~7 years
Operating Temperature -20°C to +60°C
Relative Humidity ≤90% (non-condensing)
Ingress Protection IP30
Dimension Sensor: 50 × 30 × 17 mm (1.97 × 1.18 × 0.67 in)
Magnet: 30 × 17 × 8 mm (1.18 × 0.67 × 0.31 in)
Installation On the flat surfaces with screws or 3M tapes