Amps, Volts and Frequency meters - DM 32 Series are the products of Conzerv. Conzerv is an ISO 9001-2000 certified and ISO 14001 2004 certified company The company Conzerv offers the DM32 Series that consist meters for measuring Volts, Amps, and Frequency, and come with field configurable full-scale settings. Amps, Volts and Frequency meters are basic meters that are used for current, voltage, and frequency measurement and come with field configurable full-scale settings and a built in selector switch for 3-phase measurements. Amps, Volts and Frequency meters are available Over 21 models in AC & DC versions and the Models [AC]: Volts - 1ph & 3 ph , Amps - 1ph and 3 ph and Frequency - 1ph The salient features of the Amps, Volts and Frequency meters: Accuracy Class 1.0 & 0.5 [Class 0.2 for Hz meter] Available with 3 & 3 ½ digits [4 digits for Hz meter] Compact 96 x 96 mm DIN case 12.5 mm super bright red LED display With built-in selector switch for 3 phase Voltmeter and Ammeter Fully solid state provided Field configurable full scale for Volt & Ammeters Built-in transducers