1 channel 4-20mA Current Loop Transmitter the board can be found here https://store.ncd.io/product/1-channel-4-20ma-current-loop-transmitter-i2c-mini-module/
1 channel 4-20mA Current Loop Transmitter the board can be found here https://store.ncd.io/product/1-channel-4-20ma-current-loop-transmitter-i2c-mini-module/