Temperature Controller Waterproof High and Low Alarm GSM Temperature Monitor for Machine Room Warehouse Farm 4GL‑AU AU Plug Item Type: Temperature ControllerMaterial: MetalStandard Power Supply: 12VDC, supports 0 to 36VDCPower Consumption Standby: 20mAat.12V; Maximum Power Consumption: 150mAat.12V GSM/3G/4G: GSM Frequency: 850/900/1800/1900MHz (default) SIM Card Port: Supports 3V SIM cards External Antenna: SMA antenna interface, 50 ohms Supported Protocol: for Modbus RTU Over TCP, for Modbus TCP Temperature Input Host: -55℃-125℃ (10m) : Temperature measuring range -55℃-125℃, accuracy ±0.5℃ Phase Input Phase Voltage: 100-500VAC Built in Battery 3.7V/900mAh lithium battery x1 (built in), sustainable working for 8 hours Operating Temperature Range -10℃-60℃ Operating Humidity Range:Relative Humidity 95% (without condensation) Device Size: Approx: 70mm x 88mm x 30mm/2.75x3.46x1.18in Typical Applications: Base station transceiver, ATM monitoring, power station monitoring, pump station monitoring and other remote data acquisition monitoring field Unattended room monitoring, power room monitoring, room dynamic ring monitoring Remote data acquisition and monitoring of solar power stations and intelligent charging piles Water level, water pressure, flow rate, velocity and other parameters collection Wind speed, wind speed, rainfall, temperature and other parameters of meteorological station collection Oil level, oil temperature, oil pressure and other data acquisition Intelligent agricultural temperature and humidity data acquisition and monitoring Intelligent culture temperature and humidity data acquisition and monitoring Data acquisition and monitoring of temperature and humidity in storage and library Data acquisition and monitoring of meteorological station information Temperature monitoring of cold storage, fruit and vegetable storage room, industrial computer room, transformer cabinet, etc Other occasions where temperature, humidity, PM2.5 and carbon dioxide distribution need to be monitored And so on.