Arctic Hayes Professional Digital Multimeter with Temperature Function – High-Spec, Safe & Reliable The Arctic Hayes AH118 is a rugged, auto-ranging multimeter for professional electricians, engineers and service technicians working with higher-voltage systems. It measures voltage, current, resistance, capacitance, frequency and temperature, with 6000 count true RMS accuracy for reliable readings on non-linear as well as linear loads. An input jack LED indicator adds an extra safety check, confirming test leads are connected to the correct sockets before a measurement is taken. Temperature measurement covers -20°C to +1000°C via a supplied 1m K-Type thermocouple and adaptor, and non-contact voltage (NCV) detection allows quick identification of live circuits. Max/Min and Hold functions make it easier to capture and review readings during diagnostic work.