[Interface type]：RS232/RS485
[Communication distance]： 6km
[Air rate]： 0.5k～470kbps
[Product size]： 82*62*25mmm
[Product weight]：128g±5g
[Introduction]：E610-DTU (433C20) is a data transmission station of the continuous transmission type 433M wireless data transmission module, with built-in high-performance single-chip microcomputer and wireless transceiver chip. Work in the 410 to 441MHz frequency band (default 433MHz), transmit power 20dBm. The main function is that when the module is in continuous transmission mode, it can perform continuous and uninterrupted transmission at different serial port baud rates, and the data output delay at the receiving end is low, which is suitable for scenarios that require fast transmission of large amounts of data.
| Pin | name | Function | Description |
| 1 | DB-9 female socket | RS232 interface | Standard RS232 interface |
| 2 | 3.81 Terminal blocks | RS485, power interface | Standard RS485 interface and pressure wire power interface |
| 3 | PWR-LED | Power Indicator | Red, lights up when power is on |
| 4 | TXD-LED | send light | Yellow, blinking when sending data |
| 5 | RXD-LED | Receive indicator | Yellow, blinking when receiving data |
| 6 | DC power connector | power interface | In-line round hole, outer diameter 5.5mm, inner diameter 2.5mm |
| 7 | DIP switch | DIP switch | work mode control |
| 8 | Antenna interface | SMA-K interface | Male threaded inner hole, length 10mm, characteristic impedance 50Ω |