[Acquisition type]：analog
[Acquisition range]：0~20mA
[Interface type]：RS485
[Acquisition channels]：4
[Product weight]： 245±5g
[Introduction]：A remote control product that supports analog quantity following and control acquisition. It supports wireless Modbus RTU protocol in control acquisition mode. This product is highly easy to use, and users can easily and quickly integrate it into their own system to achieve remote control based on 433MHz wireless. The analog output of the receiving end can follow the analog input of the sending end. After being configured as two-way following, the analog output of the sending end can follow the analog input of the receiving end. The product is sprayed with three-proof paint, which has functions such as "anti-mildew", "anti-humidity" and "anti-salt spray".
| Foot number | name | Function | illustrate |
| 1 | AI1+ | Analog signal input channel 1 positive | Analog signal input pin, forming an input with AI1- |
| 2 | AI1- | Analog signal input channel 1 negative | Used in pairs with AI1+ |
| 3 | AI2 + | Analog signal input channel 2 positive | Analog signal input pin, forming an input with AI1- |
| 4 | AI2 - | Analog signal input channel 2 negative | Used in pairs with AI2 |
| 5 | RESET | Reset button | Long press for 5s to reset the device address |
| 6 | 485_A | RS_485 port A | RS_485 interface A is connected to device A interface |
| 7 | 485_B | RS_485 port B | RS_485 interface B is connected to device B interface |
| 8 | ON | Grounding | Grounding |
| 9 | GND | Press-wire power input negative pole | Power reference ground |
| 10 | VCC | Press-wire power input positive terminal | Power input terminal, DC 8V~28V, 12V/24V recommended |
| 11 | ON | Grounding | Grounding |
| 12 | PWR/RST | Power/reset successful indication | Two-color light, blue light is the power indicator, green light is the reset success indicator |
| 13 | A1 | Wireless transmit/receive data indication | Two-color light, blue light indicates transmitting data, green light indicates receiving data (channel 1) |
| 14 | A0 | Wireless transmit/receive data indication | Two-color light, blue light indicates transmitting data, green light indicates receiving data (channel 2) |
| 15 | ON | Antenna interface | 433MHz Antenna |
| 16 | Dip switch | Mode Selection | M1M0（00、01、10、11） |
| 17 | AO2- | Analog signal output channel 2 negative | Used in pairs with AO- |
| 18 | AO2+ | Analog signal output channel 2 positive | Analog signal output pin, forming output with AO2- |
| 19 | AO1- | Analog signal output channel 1 negative | Used in pairs with AO+ |
| 20 | AO1+ | Analog signal output channel 1 positive | Analog signal output pin, forming output with AO1- |