The fluorescence intensity ratio technique for two fluoroindate glass samples has been carried out. The green emissions at 523 nm and at 545 nm in a 0.1 mol% of Er3+ doped fluoroindate glass was studied in a wide range of temperature from 125 K to 425 K with a maximum sensitivity of 0.0028 K-1 for 425 K. In a sample doped with 0.1 mol% of Ho3+ the emissions at 545 nm and at 750 nm were analyzed as a function of temperature from 20K to 300 K obtaining a maximum sensitivity of 0.0036 K-1 at 59K. Using both fluoroindate glass samples a wide temperature range from 20K to 425 K is easily covered pumping with two low-cost diode laser at 406 nm and 473 nm. (C) 2011 Elsevier Ltd. All rights reserved.