115 VAC or 230 VAC, 50 or 60 Hz hour meter (or minute meter), with large 0.19" figures. 6 figure readout (non-reset) or 5 figure readout (reset); 2.84" dia. tough poly-carbonate case. 3-hole panel mount (fits #4 screw on 2.44" B.C. or #6 screw on 2.53" B.C.), 2.21" panel cutout. Terminal block or wire leads termination. UL Recognized, CSA Certified, CE compliant.