E95M-DTU(400SL22-485) Wireless digital radio station LoRa spread spectrum, AT command, serial port online upgrade, 433MHz global unlicensed frequency band, small size rail-mounted radio, transmitting power 20~30dBm
[Interface type]：RS485/RS232/TTL
[Carrier frequency]：410.125～493.125MHz
[Transmit power]：22dBm
[Communication distance]：5km
[Product size]： 80*28*28.5mm
[Introduction]：E95M-DTU (400SL22-xxx) is a wireless data transmission radio using military-grade LoRa modulation technology. It has a variety of transmission methods and works in the (410.125MHz~493.125MHz) frequency band (default 433.125MHz). The radio provides transparent RS485/RS232/ TTL interface, adopts plastic shell, rail-mounted structure, supports 8~28V (DC) wide voltage input. LoRa spread spectrum technology will bring longer communication distance and has the advantage of strong anti-interference ability.
| serial number | Name | Function | illustrate |
| 1 | PWR | Power Indicator | Lights up when power is on. |
| 2 | T/R | Send/receive indicator light | The flashing light is red when sending data and green when receiving data. |
| 3 | MO | Mode indicator | Working mode indicator light. |
| 4 | M1 | Mode indicator | Working mode indicator light. |
| 5 | Mode | Mode switch button | Working mode switching control. |
| 6 | G | GND | ground |
| 7 | A | RS485 signal A | RS485 signal A |
| 8 | B | RS485 signal | B RS485 signal B |
| 9 | + | VCC | |
| 10 | - | GND | |
| 11 | ANT | RF interface | SMA-K, external thread internal hole. |
★ Note: Poor communication occurs when connecting the radio to multiple devices, but not when using a single device. Please try connecting a 120Ω resistor in parallel between the 485_A terminal and the 485_B terminal.
★ E95M-DTU (400SLxx-xxx) can be powered by 8~28V (DC) power supply, and the wiring port is connected with a terminal block (2 Pin).