Impedance:Voltage: 1000 Ohms min.; Current: 300 Ohms max.Output:0 to 20 mA (2 mA increments) 0-10 VDC (1 VDC increments).Resolution:2 mA (current), 1 VDC (voltage).Ramping Time Intervals:2 to 20 s. (2 s. increments).Ambient Operating Temperature:32° to 122°F (0 to 50°C).Power Requirements:9 V alkaline battery, installed functional, user replaceable or 120 VAC (provided).Auto Shutoff Times:2 to 20 m. (2 m. increments) (6 m. default).Electrical Connections:6′ (1.8 m) with alligator clips.Weight:3.2 oz (without battery).