Impedance:Voltage: 1000Ω min.; Current: 300Ω max.Output:0 to 20 mA (1 mA increments); 0 to 10 VDC (1 VDC increments).Resolution:1 mA (current); 1 VDC (voltage).Ramping Time Intervals:1 to 20 sec (1 sec increments).Ambient Operating Temperature:32 to 122°F (0 to 50°C).Power Requirements:9 V alkaline battery, included, user replaceable or 120 VAC (provided).Auto Power Off:1 to 20 min.Electrical Connections:6 ft (1.8 m) with alligator clips.Weight:6 oz (170 g).