DAOKI DC 12V 4-20mA 0-5V 0-10V Voltage Signal Acquisition RS485 Modbus RTU Module for PLC Current Transmitter N4AIA04 Measuring Instruments DC 8-25V

Bought one for evaluation. Works great, as decent git document describes (as noted by other reviewer, search for N4AIA04). Nicely labeled silkscreen. Input stage is voltage divider into opamp (Vadc = Vin * Ra/(Ra+Rb), where Ra,b = 100k, 39k for 0..5VDC input; Ra,b = 100k, 191k for 0..10VDC input). I needed to measure input voltage up to 20VDC, so added a 270k resistor between the input terminal and V1 0-5Vin terminal. Changed the scaling register from 1000 to 2940 so the output now read in 0.01V increments up to 20VDC. Current consumption is ca 10.0mA using its onboard linear regulator. Only negative is the mounting holes are very small (2mm screw), not more common/robust eg 4-40. Am ordering more for my application.

Works great with ModBus Poll. Amazon page could include some kind of hint, like a link.