Features: 1. 4G Module Cat.1 Core Development Board Module Full Network Communication With 2GSTM32 Routine 2. The Core Board Is An Electronic Motherboard That Packages The Core Functions Of Mnpc. Most Core Boards Integrate Cpus, Storage Devices, And Pins That Are Connected To The Matching Backplane To Implement A Certain Domain Of Soc. 3. Enrich Application Documentation, Video Tutorials And Test Routines, And Update Them Synchronously 4. Dedicated At Debugging Tool, Convenient And Fast 5. Online Full Technical Support Description: 1.Product Name: 4Gcat1 Core Board 2.Product Model:-mcore-a7670CX 3.Package Type: Pin Type 7pin (2.54mm) 4.Power Supply: 5-16v DC 5.Serial Port: Ttl Level (Default 3.3V) 6.Antenna Interface: Mount (1st Generation) 7.Sim Card Interface: Clamshell Type Nano Sim Card Holder 8.Led Light: Power Indicator, Network Indicator 9.Dimensions:2.8 x 2.6 x 1.24cm (Including Pin Height) 10.Working Temperature: -40C-85C 11.Network Frequency Band: Lte-Tdd: B34/B38/B38/B49/B41; Lte-Fdd:B1/B3/B8; Gsm/Gprs:900/1800mhz 12.Function: Data Transfer 13.Color: As Shown 14.Material: plastic Package Contents: 1 Set 4G Core Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.