1the input signal: 4--20ma dc 2the input resistance: 250 ohm 3input passage: 14 basic error: 1%, 2.5% 5deviation: 1.5% 6deadline: 0.5%--3% continuously adjustable (according to the indication of system) 7damping characteristic: no-oscillating 8power supply: three-phase 380v50hz, single-phase 220v50hz for selected 9working conditions: temperature: integral-type -10-- +55, separate-type -25 -- +70 Humidity: 85%the surrounding air does not have the corrosive elements 10protection rank: it conforms to the iec145 ip65 standards. (excluding the separate-type gamx with waterproofing and dustproof functions fixed in rooms), bus type and intelligent type ip67. 11the cut-off signal protection: it can be divided into all-on, all-off and home position according to your instructions. Generally it is set into the home position when it is manufactured. Wooden case