1. Working voltage: DC 7-25V (DC 12V/24V) 2. Working current: standby 6-8MA, working current 10-30MA 3. Support standard Modbus RTU , function code: write 06/16 read 03/04 4. With hardware reset function, RS485 with anti-surge protection, anti-reverse power supply and self-recovery fuse 5. In MODBUS mode, up to 64 devices can be used in parallel The default baud rate is 9600BPS, the baud rate can be by 1200 2400 4800 19200 38400 57600 115200BPS You can choose check mode is no check, even check and odd check You can set data sending return time, the maximum can be set to 1000ms Maximum load: 10A/250VAC, 10A/125VAC, 10A /30VDC, 10A /28VDC, 10A /12VDC N4AIC24 version:22-channel 0-20MA/4-20MA Current acquisition and 2-channel 0-30V voltage acquisition; Interface definition: VIN: Power input+ GND: Power input- I1: Current input channel 1 I2: Current input channel 2 I3: Current input channel 3 I4: Current input channel 4 I8: Current input channel 8 I15: Current input channel 15 I22: Current input channel 22 V1+: Voltage input channel 1 V2+: Voltage input channel 2 A+: RS485 signal A+ B-: RS485 signal B- Application: PLC Output expansion board Smart Home,Home Automation ,Wiser Home; PTZ CCTV Camera Security Monitoring Identification system; PT100 K P Thermocouple Sensor Automatic curtain control 4-20MA current instrumentation 0-10V/24V Voltage instrumentation Color: Green Material: PCB+Plastic Package Contents: 1 x Current Analog Input Collector Module Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.