The HT Italia HT21 model is a compact digital multimeter in complete autorange designed to perform basically voltage AC/DC measurements up to 600V, more than resistance, continuity test, diode test, frequency, capacitance and duty cycle. The meter is in compliance with IEC/EN 61010-1 safety standard with double insulation protection in CAT III 600V. HT210 have a large LCD backlight display and each measurement function can be selected with a rotary selector at 5 positions. Other features are HOLD function and REL for relative measurement. An AutoPowerOff function is integrated to preserve the internal battery after 30 minutes of idleness.