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[Interface]：RS485
[Working voltage]：DC 8V～28V
[Installation method]：guide rail + positioning hole
[Size]：102*28*27mm
[Product weight]：40g
[Introduction]：E840-DTU (EC05-485)E is a small-sized 4G DTU developed by Chengdu Ebyte Electronic Technology Co., Ltd. using 4G CAT1 technology for use in the Asia-Pacific region, Australia, New Zealand and other regions. It has small size, high speed, low latency It is low cost and easy to use. Simple configuration can realize the serial port device networking function (two-way transparent transmission between the serial port device and the network server). The product uses 2.54 spring crimp terminals and supports installation on guide rails and positioning holes. Simple configuration can realize the serial port networking process, which is very convenient to integrate into Internet of Things projects.
Parameter name Parameter value Description Characteristic parameters Support frequency band LTE-TDD: B34/B38/B39/B40/B41 LTE-FDD: B1/B3/B5/B8 Network protocol characteristics Support TCP/UDP/MQTT/HTTP/DNS protocols RF interface SMA-K (external thread internal hole) Hardware features Data interface RS485 (2.54mm spring terminal) baud rate 1200-230400, default 115200bps data bits 8 Stop bit 1 (default), 2 Check Digit None (default), Odd, Even Operating Voltage DC 8V～28V Operating temperature -40～+85℃ Dimensions 80*28*27mm product weight 40g indicator light PWR (blue) Lights up when power is on STATE (orange) Off: The device is powered on and is searching for a SIM card; Flashing: The device has detected the correct SIM card and is attaching to the network; Steady on: The device is successfully attached to the network; DATA (green) Flashing: When the serial port is sending/receiving data STATE (orange) Steady on: The device is successfully connected to the server; Off: The device failed to connect to the server successfully;