The Trumeter APM M2 is an all-in-one meter that can be configured to measure amps, voltage or frequency. It’s used for applications including switchgear and power control centres. Mains powered 100-240VAC - no additional power supply needed User configurable to measure voltage, current or frequency via APM application User-programmable bar graph and alarms to immediately alert operators when a parameter is out of range 4 character messaging area displays custom messages, alarms and annunciators Interface to other equipment using digital and analogue outputs Two LCD options: positive (as shown) for use in bright conditions or negative for use in darker environments.