Mechanical Time Switch THC-181H Features: Analogue time switch Permanent ON/OFF switch 48 switching segments Simple summer or winter time correction Switching status display Operation control display Technical data Model : THC-181H Operating voltage: AC 220V to 250V, 50 to 60HZ Driving Mode : Quartz Contact capacity : 16A Contact Resistance: below 50 milliohm Insulation Resistance: above 100 milliohm Full Timing Range : 24hrs Min Setting Unit : 30mins Power reserve : 150hrs Number of switching segments: 48 Connection type : Screw terminals External dimension: 88 multiply 52.5 multiply 66 mm Installation type : DIN rail mounting