Energy meter UMG 96-PQ-L with clock, battery and measurement data memory (64MB)Front panel device, 96 x 96 x 86 mm (WxHxD) Supply voltage:90 V - 277 V (50/60) Hz or 90 V - 250 V DCInstallation category: 300 V CAT III Measurement in TN and TT networksMeasurement of harmonics up to 65.Real energy class 0.2S3 voltage measurement inputs:Measurement category: 600 V CAT III Measurement in 3-phase 4-wire systems up to 417 V/720 V (+-10%) according to IEC Measurement in 1-phase 2-wire systems up to 480 V (+-10%)3 current measurement inputs:Measurement category: 300V CAT II Nominal current 5A / 1A adjustable Current measurement range: 5 mA... 6 AResolution: 0.1mAPeripherals:3x digital inputs and outputs each1x analog output 1x RS485 (Modbus RTU)Accessories (included):33.03.389 Installation instructions including safety instructions and 'Software-GridVis' quick start guide52.22.251 Mounting kit 52.00.008 RS485 terminating resistor 120 OhmProgramming software 'GridVis Essentials' download: www.janitza.de/gridvis-download.html