Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si It Is Thin, Light And Compact, Has More Advantages, And Has Better Performance After Optimization And Upgrade In Many Aspects. Complete Wifi And Bluetooth Protocols The Io Port With Touch Function On The Board Is Used As Touch Signal Input Onboard Lithium Battery Charging And Discharging Circuit, The Orange Led Light Will Go Out When The Battery Is Full More Direct, More Practical, More Professional And More Convenient Main Frequency:240mHz Processor:Tensilica LS6 Dual Core Lora Chip:SS1276 Open Communication Distance:2.8km Dual-Mode Bluetooth:Traditional Bluetooth And Ble Low-Power Bluetooth Working Voltage:3.3-7V Receiver Sensitivity:-139Dbm (Sd12,125khz) Flash:8Mbyte Main Control Chip:ESP32 Supported Frequency Band:868-915mHz Computing Power:600 Dmips Development Environment:Perfect Support For Ard Working Temperature Range:-40-90C Udp Continuous Throughput:135Mbps Tips: 1. The Lora Communication Function Of Wifi Lora 32 Must Be Used With An Antenna With The Same Frequency. If There Is No Antenna, The Lora Chip May Be Damaged. 2. The Onboard Lithium Battery Charging And Discharging Circuit. The Orange Led Light Will Go Out When The Battery Is Full. It Only Provides Basic Lithium Battery Charging And Discharging Functions And Cannot Monitor The Battery Temperature And Power. If Your Battery Was Not Purchased In Our Store, Use Be Sure To Pay Attention To The Positive And Negative Poles Of The Battery. Reverse Connection May Cause Explosion. Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB+Plastic Package Contents: 1 * Development Board 2 * Pin Header 1 * Antenna 1 * Pin Description Paper 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.