This digital controller provides accuracy of 0.1% of displayed value and a sampling rate of 0.025 second.
The difference between the HA401/ 901 and theHA400/ 900 is autotuning algorithm.

High speed sampling : 0.025 sec.
Single loop / Dual loop / Cascade control
Multi-memory area ( Up to 16 sets)
Bar-graph display
Dual digital communication ports
Modbus, Profibus, and DeviceNet support