4G 4-channel relay controller with mains failure, temperature & humidity alarm – SM4-WLTE-EC

🔌 General Description: Smart 4G controller with 4 relays for home automation and security — ideal for demanding French DIY enthusiasts. Remotely control your devices via the app, web, or SMS. Accurate detection of power outages, temperature (-40 to 125°C), and humidity. Designed for reliable professional and residential installations. 📐 Technical Specifications: Material: Robust and durable aluminum; Weight: 433 g; Power Supply: Integrated European plug (100–240 V); Consumption: 50 mA (standby), 200 mA (maximum operation); 4G LTE FDD Frequencies: B1, B3, B5, B7, B8, B20; GSM Frequencies: 900 / 1800 MHz; SIM Card: Standard format; Antenna: SMA interface; Sensors: 2 dedicated ports (temperature & humidity); Relay Output: 4 channels, NO/NC, 10 A or 15 A; Contents: 1 controller, 1 EU plug, 1 instruction manual, 3 accessories. 🛠️ Installation: Intuitive 3-minute installation: Insert the SIM card, plug into a power outlet, and connect the sensors and relays. No special tools required. Compatible with standard electrical boxes. 📱 Use: Control your pumps, heaters, gates, or irrigation systems from anywhere. Receive immediate SMS alerts in case of a power outage or exceeding a climate threshold. Perfect for cellars, greenhouses, commercial premises, or vacation homes. ℹ️ Other information: Integrated "power loss" function for continuous monitoring. User-friendly web interface and mobile app, available in French. Compact and discreet design, ready to be installed in any modern technical environment.