[Collection]:Switching quantity/digital quantity
[Interface]:RS485
[I/O channel]:2-channel
[Size]:124*105*25mm
[Weight]:242±5g
[Feature]:E820-DTU(2I2-433L) is a remote controlling device supporting analog quantity following, controlling and collecting. Under controlling and collecting mode, it supports Modbus RTU protocol. This product features easy-to use, it can be integrated into user systems so as to realize remote wireless controlling via 433MHz band.
| RF Parameter | Index | Remark |
| Standard band | 433MHz | - |
| TX power | 30 dBm | Max. Power (1W) |
| Hardware Parameter | Index | Remark |
Size (H*W*D) | 124*105*25 mm | |
Weight | 138±2 g | |
Operation temperature | -20℃ -+70℃ | |
Storage temperature | -40℃ -+85℃ | |
Operation humidity | 5% ~ 95% | |
Storage humidity | 1% ~ 95% | |
Operation voltage | 8V ~ 28V | |
Current collecting range | 0mA ~ 20mA | |
Current output range | 0mA ~ 20mA | |
Precision | 0.2% | |
Data interface | RS485:9600bps | |
| Software parameters | Index |
| Operation mode | Following TX, Following RX, Controlling & Collecting, Configuration |
| Configuration command | Modbus RTU |
| Pin No. | Pin Item | Function | Description |
| 1 | AI1+ | Analog signal input channel 1 positive | Analog signal input pin, forms input with AI1- |
| 2 | AI1- | Analog signal input channel 1 negative | Pair with AI1+ |
| 3 | AI2+ | Analog signal input channel 2 positive | Analog signal input pin, forms input with AI1- |
| 4 | AI2- | Analog signal input channel 2 negative | Pair with AI2- |
| 5 | RESET | Reset button | Reset device address by long-pressing 5s |
| 6 | 485_A | RS_485 A | RS_485 A connects with device A connector |
| 7 | 485_B | RS_485 B | RS_485 B connects with device B connector |
| 8 | GND | Wire pressing power input negative | Power GND |
| 9 | VCC | Wire pressing power input positive | Power input end, DC 8V~28V, 12V/24V recommended |
| 10 | PWR/ACK | Power/reset successful indicator | Dual-color indicator, blue represents power, green represents reset successful. |
| 11 | A1 | RF data TX/RX indicator | Dual-color indicator, blue represents data TX, green represents data RX (channel 1) |
| 12 | A2 | RF data TX/RX indicator | Dual-color indicator, blue represents data TX, green represents data RX (channel 2) |
| 13 | ANT | Antenna connector | 433MHz antenna |
| 14 | DIP switch | Mode selection | M1M0（00, 01, 10, 11） |
| 15 | AO2- | Analog signal output channel 2 negative | Pair with AO- |
| 16 | AO2+ | Analog signal output channel 2 positive | Analog signal output pin, forms output with AO2- |
| 17 | AO1- | Analog signal output channel 1 negative | Pair with AO+ |
| 18 | AO1+ | Analog signal output channel 1 positive | Analog signal output pin, forms output with AO1- |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| 产品 型号 | Interface | Collection | I/O channel | signal type | Package | Size (mm) | Feature | 技术 手册 | 样品 购买 |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| E820-DTU(2I2-433L) | Analog quantity | SX1278 | 433M | 30 | - | - | Screwing | 105*79*25 | 2-channel,Modbus RTU | ||
| E820-AIO(UI-485-4-5) | RS485 | analog signal | 4 channel input | 0~5V | Screwing | 82*84*25 | Modbus RTU | ||||
| E820-AIO(II-485-4-20) | RS485 | analog signal | 4 channel input | 4~20mA 0~20mA | Screwing | 82*84*25 | Modbus RTU |
