EM300-MCS Magnetic Contact Switch

The EM300-MCS is Milesight's industrial-grade LoRaWAN magnetic contact sensor. It monitors door and window open/close status in real time while measuring ambient temperature and humidity. With IP67 protection and UV resistance, it operates reliably indoors and outdoors. Data transmits over LoRaWAN at ranges of 2–15 km and integrates with Milesight IoT Cloud. IoTMarketi provides a multi-brand IoT sensor catalog in Turkey, offering quote-based procurement for industrial and smart building projects.\n\n## Key features\n\n- 3 sensors in 1 device: Magnetic contact, temperature (±0.3°C accuracy, 0–70°C), and humidity (%10–90 RH ±3%) measurement\n- IP67 protection: Full dust and water ingress protection; UV-resistant design\n- High sensitivity: 20–30 mm open/close detection distance\n- Extended battery life: 1 × ER18505 Li-SOCL₂ 4000 mAh (optional 8000 mAh) delivers 5+ years, up to 10 years of service\n- Data storage: 2,800 historical records; cannot be manually deleted (audit trail)\n- Data retransmission: Guarantees all data reaches the server even during network interruptions\n- LoRaWAN compatibility: Works with standard LoRaWAN gateways and network servers\n- NFC configuration: Wireless setup via mobile app\n\n## Benefits\n\n- Wide transmission range: 2 km in urban areas, 15 km in rural areas — no additional cabling required\n- Flexible alarm settings: Customizable reporting interval and frequency; adapts to various scenarios\n- Cloud integration: Milesight IoT Cloud with data visualization dashboard, automatic triggers, real-time alerts, and Android/iOS app\n- Industrial reliability: Long-term operation in harsh environments (factories, warehouses, outdoor)\n- Low maintenance: No configuration or adjustment needed beyond battery replacement\n\n## Use cases\n\n- Retail and warehouse management (unauthorized entry alerts)\n- Industrial facilities (machine room, control panel security)\n- Smart buildings and office automation (climate control + security)\n- Cold chain and warehouse temperature monitoring\n- Agricultural and greenhouse applications (temperature/humidity + door status)\n\n## Technical notes\n\n- Temperature range: −30°C to +70°C; accuracy ±0.3°C (0–70°C), ±0.6°C (−30–0°C)\n- Humidity range: 10–90% RH, ±3% accuracy\n- Magnetic detection: 1.5 m cable with 20–30 mm open/close sensing distance\n- Frequency support: CN470, IN865, RU864, EU868, US915, AU915, KR920, AS923 (1–4)\n- Wireless: LoRaWAN OTAA/ABP Class A, Milesight D2D, internal antenna\n- Power: 16 dBm (868 MHz), 20 dBm (915 MHz), 19 dBm (470 MHz); −137 dBm sensitivity