supply of digital multi-function meterdigital multi-function meter,digital multi-function meter with lcd display, flush mounted type of size 96 mm x 96 mm with aux. supply: 44 - 277 volts ac, input voltage: 80 - 480 v (line to line), ct range: / 5 amps and suitable to measure voltage, current, frequency, power, power factor, demand, t hd, energy (kwh, kvah, kvarh) in 3 phase 3 wire & 3 phase 4 wire circuits and having accuracy class 0.5 with rs 485 port compatibility. the firm shall submit the calibration certificate al ong with supply and also extend warranty for a period of minimum two years for the meter supplied by them. make : secure, elmeasure, schneider or similar. make supplied by oem/autho rized dealers only accepted. [ warranty period: 30 months after the date of delivery ] ] => limited