The UL listed Whirlwind PL-PM1RJ Power Meter is designed for monitoring voltage, current and frequency on 3 phase Y power with three 120 Volt AC legs or single phase AC with two 120 Volt legs. The PL-PM1RJ monitors line to neutral and line to line voltages and line current values. Additionally, neutral to ground voltage and line frequency are monitored. A new enhancement of the PL-PM1RJ now allows network connectivity for remotely viewing power distribution parameters in real time. IP based design permits Internet accessibility. The Whirlwind PL-PM1RJ Power Meter can be used with portable AC distribution and permanent power distribution systems. The PL-PM1RJ can be included in Whirlwind Power Link distro systems and also can be purchased separately for any applicable use. The Pl-PM1RJ is also available with a current sensing transformer kit. Use part number PL-PM1RJK1 for new installations or PL-PM1RJK2 for existing installations.