HP-W series Digital Timer Relay features: 1) 4 digit bright LED display, high accuracy: 0.5%FS 2) Power fail memory function 3) Auto cycle timing and delay output 4) 3 timing units, hour, minute and second 5) dimension: 48*48, 96*48, 72*72 6) timing range: 0.01S---999.9H 7) Power supply: 110/220V AC (48*48, 110V should be special ordered). 48*48,72*72,96*48 mm can be choosed, one product in one standard paper box.