... range: -40°C ~ 85°C Working humidity range: Max 95% Storage temperature: -55°C ~ 92°C Vibration: 20-100HZ 500mm/Sec ... .2. Stamford AVR: AS440, MX321, MX321-A, MX341,MX341-A, SX440, SX440-A, SX440-T, SX460, SX460-A.3. Leroysomer AVR: R230, R438, R448, R449 ... informations, would you please visit our website: www.facfdz.comHave a nice day. Thanks. Cummins Engine Speed Control Unit 3044196