Feature:1. Heavy Duty: Manfactured with metal shell, electronic components, protection level IP30, metal shell securely isolates the system, especially suitable for industrial control field applications.2. Network Update: Adopt GSM/GPRS/3G/4G network communication, allowing usage without distance restrictions. It's designed with a modular structure, meaning upgrades to GSM/3G/4G networks can be easily achieved by simply replacing the module.3. RS485 Serial Port: Supports for Modbus Slave and for Modbus RTU Master protocols, and connects to SCADA, HMI, DSC, and PLC, can be used to expand up to 16 for Modbus Slave devices, such as for Modbus RTU remote data acquisition module, electricity meter, water meter, diesel generator, inverter, PLC, etc. Up to 320 data points to set alarm conditions and customize alarm SMS content4. SMS Alarm Module: The PLC send and receive SMS commands directly that supports for Schneider and for Modbus protocols, can monitor a number of SMS alarms based on for Modbus instrument/ECU data abnormal limit, etc., and can also query the communication status between the host and the slave through SMS, and will send SMS notification when have failure communication.5. Transparent Data Transmission: Embedded TCP/IP protocol stack, support transparent data transmission protocol, support TCP/UDP, for Modbus TCP protocol, for Modbus RTU over TCP protocol, MQTT protocol, barium Rhenium IoT RTU protocol and transparent transmission function. RS485 also supports transparent data transmission;6. USB Interface and Reconnect Server: Support USB interface to configure parameters, read, export history records and upgrade programs through computer configuration software; Supports the active connection to the server with the custom handshake protocol and the automatic reconnection to the server after the disconnection.Specification:Item Type: Cellular IOT Alarm DeviceMaterial: Metal, Electronic ComponentsPlug Voltage: Wide voltage 100-240VPower SupplyPower Voltage: 9-36V DCPower Consumption: Normal: 50mA at 12V, Maximum: 150mA at 12VPower Output:2 ChannelsOutput Voltage: 9-36V DC (same as input voltage)Output Current: 1500mA at 12V (maximum)Power Protection: Reverse Connection Protection, ESD Air: 15KV, Surge: 4KVSerial Ports:Number of Serial Ports: 1 x RS485Baud Rate: 1200bps-115200bpsData Bits: 8Parity: None, Even, OddStop Bits: 1,2Protocol: For ModbusRTU (slave), For ModbusRTU (master)Serial Port Protection: ESD Contact: 8KV, Surge: 4KV (8/20us).Package List:1 x Cellular IOT Alarm Device 1 x USB Cable1 x Cellular Network Antenna1 x Power Adapter1 x Rail Mounting Clip3 x Screws1 x Converter1 x SIM Card Ejector Pin1 x 4 Pin Wire Terminal1 x 6 Pin Wire Terminal2 x 8 Pin Wire Terminal1 x 12 Pin Wire Terminal