TL17 test leads, 9V battery, K type thermocouple and instructions. ET5 Electrical Tester. The Martindale ET5 is a compact electrical tester for measuring voltage, resistance and current. The electrical tester has all of the same useful functions as the ET4 but with the additional features of capacitance, temperature and duty cycle.. AC / DC Current: 0.1A to 200A AC / DC Voltage: 0.1mV to 600V Resistance: 0.1 to 50M Frequency: 30Hz to 400Hz Continuity: 0.1 to 500 , buzz at <30 Diode Test: 1mV to 2V Non-Contact Voltage Indicator: 70V to 600V Temperature Measurement: -35°C to +500°C Duty Cycle Capcitance Fork maximum conductor size: 15mm diameter Power: 9V PP3 Alkaline (included) Dimensions: 202 x 51 x 44 mm Weight: 200g (battery included). SAFETY. Conforms to BS EN 61010-1, BS EN 61010-2-032, CAT III 600 V Class II, Double Insulation Pollution Degree 2, indoor use. EMC. Conforms to BS EN 61326-1