... program 2. PID automatic control 3. several alarm mode setting digital temperature regulatorFeatureusing friendly designing operation method is easy to study ... .Good quality and competitive price.technical and parameterRTD: Cu50,Pt100.TC: K, S, R, T, E, HJ, B, N, WRe3-WRe25 ... / 30mA (usage for driving SSR) .9. SCR trigger output : trigging 5-500A double SCR, 2 single SCR anti-parellel or SCR ...