1、Alarm Alerts: The monitor can set the high and low limit alarm value of temperature according to the actual application. Once the alarm value is reached, it will send alarm SMS and make a phone call to notify the user. 2、Smart Design: Users can call the device number through the authorized number, the device will automatically reject and immediately send the current status SMS to the caller. 3、Setting Support: Users can query the current monitoring status through SMS commands, and the device can set up a daily timed and periodically report the current status SMS to the first user. 4、Authorization Number: The alarm supports 10 authorized user numbers, which can receive alarm SMS when alarming, and the last 5 authorized numbers can also receive alarm call reminders. 5、Performance: Upgraded chip, premium metal material, waterproof, moisture proof and rust proof, giving you an excellent using effect. Item Type: Temperature Controller Material: Metal Standard Power Supply: 12VDC, supports 0 to 36VDC Power 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. 1 x Temperature Controller 1 x Antenna 1 x Sensor 1 x Power Adapter 1 x User Manual