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

Product Attributes

Introduction

The E220-400R30D adopts a new-generation LoRa spread-spectrum technology based on the LLCC68 chip, designed specifically for RS485 modules and supporting multiple transmission modes. Its operating frequency ranges from 410.125 to 493.125 MHz, with a default frequency of 433.125 MHz, and supports 5.0V DC power supply. The module ships with a dedicated power-on unit for automatic recognition upon power-up. It supports transparent and fixed-point transmission modes, can be paired with E220 series modules in the same frequency band, and is suitable for low-power applications.

Features

• Based on LLCC68 chip, utilizing advanced LoRa spread-spectrum modulation for extended communication range and enhanced anti-interference capability.
• User-defined communication keys with read-protection, significantly improving data confidentiality.
• LBT support — listens to channel ambient noise before transmission, significantly improving communication success rate in harsh environments.
• RSSI indicator support for signal quality assessment, communication network optimization, and ranging.
• Point-to-point transmission, broadcast transmission, and channel monitoring support.
• Compatible with license-free ISM 433MHz band and 470MHz meter-reading band worldwide.
• Automatic parameter saving on power-off; resumes operation with configured parameters upon power-on.
• Efficient watchdog design — automatically restarts upon anomaly and resumes operation with previous parameter settings.
• Data transmission rate: 2.4k to 62.5kbps.
• Industrial-grade design, supports continuous operation in -40 ~ 85°C environments.
• SMA antenna interface.

Applications

• Home security alarms and remote keyless entry systems
• Smart home and industrial sensors
• Wireless alarm security systems
• Building automation solutions
• Wireless industrial remote control
• Advanced metering infrastructure
• Automotive applications