Ebyte EWM290-400R20D Automatic relay networking Spread Spectrum Technology 20dBm RS485 Interface 433MHz lora Wireless Module
EWM290-400R20D RS485 Interface LoRa Wireless Module PANCHIP PAN3060 CHIP Transmission distance up to 5km support AT command Firmware online upgrade [Transmitting power]：20dBm [Communication distance]：5km [Product size]：38*23mm [Product weight]：7.1±0.2g [Introduction]：EWM290-400R20D is a new generation of domestic LORA module developed by Ebyte. It is based on the PAN3060 RF chip of Panqi Micro. The RS485 interface module works in the frequency band (410.125～493.125MHz) (default 433.125MHz), supports DC 5V power supply, and can be used with the E290-T series of the same frequency band series for low-power applications. It adopts the new generation of ChirpIoT™ spread spectrum technology, supports half-duplex wireless communication, supports air wake-up, wireless configuration, automatic relay, communication key, AT command, IAP upgrade and other functions, and can provide customized development services. Radio frequency parameters unit EWM290-400R20D Remark Maximum transmit power dBm 20 - Reference distance km 5 It is clear and spacious, with an antenna gain of 5dBi, an antenna height of 2.5 meters, and an air speed of 2.4kbps. Working frequency band MHz 410.125～493.125 Supports ISM bands Air speed bps 2.4k ～ 64.5k User Programming Control Electrical parameters unit EWM290-400R20D Remark Operating voltage V 4.5~5.5 ≥5V can guarantee the output power, and if it exceeds 5.5V, there is a risk of burning the module. Power consumption Emitting current mA 95 Instant power consumption Receive current mA 10 - Sleep current uA 590 - temperature Operating temperature ℃ -40～+85 Industrial design Storage temperature ℃ -40～+85 Industrial design Hardware parameters EWM290-400R20D Remark Crystal oscillator frequency 32MHz Industrial-grade high-precision crystal oscillator Modulation method LoRa The new generation of LoRa modulation technology Interface method PH2.0 Spacing 2.0mm, reserved 2.54mm holes Communication interface RS485 interface - Emission length 240 Byte Subcontract 32/64/128/240 bytes can be set through instructions Packaging method Pin type - Cache capacity 500Byte - Antenna interface SMA-K Equivalent impedance is about 50Ω size 38*23mm ±0.2mm Net weight of product 7.1g ±0.2g