50c operation is supported for short term when using, Operation only c1000, 8t, E, 2g, L, C1000, 8t, 2g, L, C1000, 8p, E, 2g, L, C1000, 8p, 2g, L, C1000, 8fp, E, 2g, L, C1000, 8fp, 2g, L, C1000, 16t, E, 2g, L, C1000, 16t, 2g, L, C1000, 16p, E, 2g, L, C1000, 16p, 2g, L, C1000, 16fp, 2g, L, C1000, 24t, 4g, L, C1000, 24p, 4g, L with glc, Bx, U or glc, Bx, D the thermal, Sfp module limitations consist of the next items a maximum of 5, 000 feet, The operation temperature should not exceed 45 c A maximum of 10, 000 feet, The operation temperature should not exceed 40 c when using c1000, 24t, 4x, L, C1000, 24p, 4x, L with sfp, 10g, Er or sfp, 10g, Er, S sfp, Module, The thermal limitations are as follows up to 5, 000 feet, The operation temperature should not exceed 45 c up to 10, 000 feet, The operation temperature should not exceed 40 c minimum ambient temperature for cold start is at 0 deg c 32 deg f