آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The E77-400/900M22S series are standard LoRaWAN node modules. The E77-400M22S operates in the 410~510MHz band, and the E77-900M22S operates in the 868~930MHz band. The E77-400M22S supports LoRaWAN 1.0.3 EU433/CN470 standards, while the E77-900M22S supports LoRaWAN 1.0.4 EU868/US915/AU915/AS923/IN865/KR920/RU864 standards. Both support CLASS-A/CLASS-C node types and ABP/OTAA network access methods. The modules also feature multiple low-power modes. External communication is via standard UART. Users can easily configure and connect to a standard LoRaWAN network through AT commands. An ideal choice for IoT applications.

Features

• Communication range up to 5.6km under ideal conditions using transparent transmission protocol
• Communication range up to 3.5km under ideal conditions using LoRaWAN standard firmware
• Maximum transmit power 21.5dBm, multi-level software adjustable
• E77-400M22S supports global license-free ISM 433/470MHz band
• E77-900M22S supports global license-free ISM 868/915MHz band
• E77-400M22S supports LoRaWAN 1.0.3 EU433/CN470 standard
• E77-900M22S supports LoRaWAN 1.0.4 EU868/US915/AU915/AS923/IN865/KR920/RU864 standard
• E77-400/900M22S supports Class A and Class C device types
• Supports ~12SF spreading factor transmission for dense network deployments
• Supply voltage 1.8~3.6V; performance guaranteed at any supply above 3.3V
• External crystal using 32.768kHz high-precision industrial crystal and 32MHz high-precision industrial TCXO
• 14.0×20.0×2.7mm compact SMT package for easy system integration
• Industrial-grade design, supports long-term operation at -40~+85℃
• Optional dual antenna for user secondary development and integration

Applications

• Smart home and industrial sensors
• Security systems, positioning systems
• Wireless remote controls, drones
• Wireless gaming controllers
• Healthcare products