[Interface type]：RS485/network port
[Transmitting power]：20dBm
[Communication distance]：1km
[Size]：66*68*21.6mm
[Introduction]：EWD611-900NW20(485) is a long-distance image transmission + data transmission radio developed by Ebit. With a transmission rate of 16Mbps, it can realize 4-channel 1080p video transmission, and can also achieve transparent transmission of network port + serial port at the same time.The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray. It works in the 850MHz~930MHz frequency band, and the maximum RF transmission power is 20dBm. The digital radio uses universal AT commands, which is simple and fast to operate. It can be widely used in smart wearables, home automation and other fields.
Official Store| Main parameters | describe | Remark |
| Communication interface | RS485/network port | - |
| FLASH | 8MB | - |
| SRAM | 704KB | - |
| Overall dimensions | 66*68*21.6mm | Tolerance range ±0.2mm |
| Antenna interface | SMA-K interface | External thread inner hole, length 10mm, characteristic impedance 50Ω |
| Product net weight | 68g | Tolerance range ±1g |
| Main parameters | Performance description | Remark | |||
| minimum value | Typical value | maximum value | |||
| Working voltage (V) | 5 | 5/12 | 15 | Power supply optional 5V or 12V | |
| Supply voltage (V) | - | - | 12 | - | |
| Communication level (V) | - | 3.3 | - | There is a risk of burning when using 5V level | |
| Working temperature (℃) | -40 | - | 85 | Industrial grade design | |
| Working frequency band (MHz) | 850 | - | 930 | The default frequency band is 915MHz | |
| Transmit power (dBm) | 19.5 | 20 | 20.5 | - | |
| Power consumption | Emission current (mA) | - | 500mA | - | Operating voltage is 5V, peak transient current @20dBm |
| Receive current (mA) | - | 100mA | - | Working voltage is 5V | |
| Sleep current(uA) | - | 10mA | - | - | |
| Receiving sensitivity (dBm) | - | -107 | - | 1M MCS10 | |
| Communication distance (m) | - | 500 | 1000 | Sunny and open environment, height 1 meter, @20dBm, transmission rate 16Mbps. | |