4G alarm controller with SMS and voice call SM1-WLTE-EA for temperature and humidity, remote control via app/web

🌡️ General Description: SM1-WLTE-EA 4G alarm controller for intelligent temperature and humidity monitoring — with SMS alerts, voice calls, and remote triggering via mobile app or web interface. Ideal for garages, elevators, warehouses, offices, or homes. Designed for reliability, simplicity, and responsiveness.⚙️ Technical Specifications Model: SM1-WLTE-EA Power Supply: European plug 100–240 V (included) Material: Robust aluminum Weight: 286 g Temperature Range: -40 to +125 °C Humidity Range: 0 to 100% Relay Output: 1 channel, 10 A / 15 A, NO/NC 4G LTE FDD Frequencies: B1, B3, B5, B7, B8, B20 GSM: 900 / 1800 MHz Interface: Standard SIM card, SMA antenna, integrated sensor port Power Consumption: Standby 12 V / 50 mA — Max. operation 12V / 200mA Contents: 1 controller, 1 EU plug, 1 instruction manual, 2 accessories 🔧 Installation Intuitive 3-minute installation: plug in the EU plug, insert the SIM card, connect the sensor. No tools or technical skills required. 📱 Use Monitor and manage everything remotely from your smartphone or browser. Receive immediate alerts in case of threshold exceedance or power outage. Save time, have peace of mind, and gain total control—anywhere, anytime. ℹ️ Other information Designed for demanding professional and home use. Cross-platform compatible web interface and app. Works without a router or local network—only via the integrated 4G connection. External sensor included for accurate on-site measurement.