... (Relay, SSR, 4-20mA ). RS485 PID temperature controller PID fuzzy control, P, PI, PD, PID, or on/off,multi-input(K, J ... °C Ambient humidity for use and storage: 10...90% RH (non-condensing) Detailed SpecificationsIntelligent temperature controller (digital temperature controller) specificationsAccuracy ± ... to 50 °C (32 to 122 °F) Working humidity 85% RH max, non-condensing External dimensions 72*72* ...