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EM300-MCS Open detection/Temperature/Humidity

1 * 4000 mAh Li-SOCL2 battery (8000 mAh optional) NFC enabled IP67 rated Cable Length: 260mm

  • Configuration Interface
  • Cable length
  • Frequency band
  • Sensor
  • Waterproof
  • Class
  • Power type
  • Battery Capacity

SG$ 102.54

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1 * 4000 mAh Li-SOCL2 battery
(8000 mAh optional) NFC enabled
IP67 rated
Cable Length: 260mm

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At Milesight IoT, we are passionate about the connectivity of “things” to the cloud. We leverage the value of the top trending technologies that transform the world we live in and are committed to our partners who share the same passion.



The EM300-MCS magnetic contact switch can be mounted to any door or window to detect an opening or closing event. It adds physical security monitoring to your location by alarming for intrusion or unauthorized entry to your monitored conditions.


  • Security alarm for door or window opening

  • Measures temperature between -40°C to 70°C

  • Measures humidity between 0% and 100% RH

  • IP67 water and dustproof

  • Compatible with industry-standard LoRaWAN® gateways (range of up to 15km in rural areas and 2km in urban)

  • 5-10 years of battery life. Comes with 1 x easily replaceable 4000 mAh Li-SOCL2 Battery. Use 2 for 10 years of battery life.

  • Easy configuration through NFC from your mobile phone or PC

  • Remote monitoring through Milesight IoT Cloud (Android & iOS)

Specifications for EM300-MCS Open detection/Temperature/Humidity

Configuration Interface NFC
Frequency band AS923 or AU915 or EU868 or IN865 or US915
Cable length NA
Sensor Temp/Humidity/Hall Switch
Waterproof IP67
Class Class A
Power type Battery
Battery Capacity 4000mAh
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  • EM300-MCS Datasheet

    Release date: March 15, 2021

  • EM300 Series User Guide

    Release date: March 15, 2021

  Tx Power17dBm (470) / 16dBm (868) / 20dBm (915)
  Sensitivity-147dBm @300bps
  ModeOTAA/ABP Class A
SensingLead Cable1007UL #22AWG 260mm
  TypeNormally closed
  Distance of magnets20-30mm
  Distance of holes22mm
TemperatureMeasuring Range-30°C to +70°C
  Accuracy0~70°C: ±0.3°C
-30~O°C: ±0.6°C
HumidityMeasuring Range0%~100% RH
±5%(Other ranges)
Physical CharacteristicsPower Supply18505 Li-SOCL12 4000mA ( 8000mA optional)
  Battery Life≧ 5 years ( for 1 battery)
  Operating Temperature-40°C to 70°C
  Ingress ProtectionIP67
  Dimension88 × 87 × 27 mm
  MountingWall (screws or 3M adhesives)