<https://shop-testo.ir/product/testo-835t1/#product>
<http://schema.org/description>
"مشخصات فنی\r\nTechnical DataTechnical Data\r\n\r\n\r\n\r\nTemperature - Type K TC\r\n\r\n\r\n\r\n\r\nMeasuring range\r\n-58° to 1112 °F / -50 to +600 °C\r\n\r\n\r\nAccuracy\r\n±(0.9 °F + 0.5 % of mv) / ±(0.5 °C + 0.5 % of mv)\r\n\r\n\r\nResolution\r\n0.1 °F / 0.1 °C\r\n\r\n\r\n\r\n&amp;nbsp;\r\n\r\n\r\n\r\nTemperature - Infrared\r\n\r\n\r\n\r\n\r\nMeasuring range\r\n-22° to 1112 °F / -30 to +600 °C\r\n\r\n\r\nAccuracy\r\n±4.5 °F (-22° to -4.2 °F) / ±2.5 °C (-30.0 to -20.1 °C)\r\n\r\n±2.7 °F (-4.0° to 31.8 °F) / ±1.5 °C (-20.0 to -0.1 °C)\r\n\r\n±1.8 °F (32.0° to 211.8 °F) / ±1.0 °C (0.0 to +99.9 °C)\r\n\r\n±1 % of mv (Remaining Range)\r\n\r\n\r\nInfrared resolution\r\n0.1 °F / 0.1 °C\r\n\r\n\r\n\r\n&amp;nbsp;\r\n\r\n\r\n\r\nGeneral technical data\r\n\r\n\r\n\r\n\r\nWeight\r\n18 oz. / 514 g\r\n\r\n\r\nDimensions\r\n8 x 7 x 2 in. / 193 x 166 x 63 mm\r\n\r\n\r\nOperating temperature\r\n-4° to 122 °F / -20 to +50 °C\r\n\r\n\r\nHousing\r\nABS + PC\r\n\r\n\r\nEmissivity table\r\n20 values\r\n\r\n\r\nLaser spot\r\non / off\r\n\r\n\r\nStandards\r\nEN 61326-1:2006\r\n\r\n\r\nAlarmsignal\r\naudible; rpm - Optical\r\n\r\n\r\nAuto-off backlight\r\n30 sec*\r\n\r\n\r\nAuto-off instrument\r\n120 sec*\r\n\r\n\r\nBattery type\r\n3 AA Batteries (or USB operating with PC-Software)\r\n\r\n\r\nBattery life\r\n25 h (typical 25°C without laser and backlight) 10 h (typical 25°C without backlight)\r\n\r\n\r\nDisplay type\r\nDot Matrix\r\n\r\n\r\nMemory\r\n200 measuring values\r\n\r\n\r\nStorage temperature\r\n-22° to 122 °F / -30 to +50 °C\r\n\r\n\r\n\r\n*disabled for continuous measurement and USB connection"
<https://shop-testo.ir/product/testo-835t1/>