Protek D-988

Unit comes with: Carring Case Inductive Probe Test Leads 2 Aligator Clips Thermocouple and Adaptor 2 year warranty Manual Protective Holster Features: 1mS glitch capture (Peak Min/Max) for identifying noise and rapid signal Measures RPM of both distributor and DIS vehicles with the inductive pickup probe, no need to disconnect wires Frequency function measures frequency output type sensors and ABS wheel sensors. mS pulse width measures the on-time of fuel injectors, idle air motors, and actuators Min/Max/Avg for recording a reading over a period of time 3-3/4 Digit 4000 count backlit displat, for east and accurate readings in a dimly lit service bay, or under the hood Measures both dwell and duty cycle for 4,5,6 and 8 cylinder vehicles. Temperature measurement in fahrenheit or celsius for checking thermostats, engine cooling systems, heating/air conditioning systems, and fan switches High speed 42 segment bar graph to monitor Trends in TPS and other variable voltage outputs. Diode test checks alter meter, relay, solenoid and A/C clutch compressor diodes. Continuity Buzzer for checking wire harness under the dashboard and other places where liking at the LCD display is difficult. Overload protection on all ranges and functions

• DC Voltge  

Range	Resolution	Accuracy
400mV	0.1mV	±(0.3%rdg+1d)
4V	0.001V	±(0.3%rdg+1d)
40V	0.01V
400V	0.1V
1000V	1V

• AC Voltage

Range	Resolution	Accuracy
400mV	0.1mV	±(1.2%rdg+5d)
4V	1mV	±(1.2%rdg+5d)
40V	10mV
400V	100mV
750V	1V

• DC current

Range	Resolution	Accuracy
4mA	0.001mA	±(1.5%rdg+3d)
10A	0.01A	±(2%rdg+3d)

• AC current

Range	Resolution	Accuracy
4mA	0.001mA	±(1.5%rdg+3d)
10A	0.01A	±(2%rdg+3d)

• Resistance

Range	Resolution	Accuracy
400 Ohm	0.1 Ohm	±(0.75%rdg+2d)
4K Ohm	0.001K Ohm
40K Ohm	0.01K Ohm
400K Ohm	0.1K Ohm
4M Ohm	0.001M Ohm
40M Ohm	0.01M Ohm	±(1.5%rdg+5d)

• Temperature

Range	Resolution	Accuracy
-17'C ~ 1093'C	1 'C	±(3%rdg+3d)
0 'F ~ 2000 'F	1 'F	±(3%rdg+5d)

• Frequency

Range	Resolution	Accuracy
200Hz	0.01Hz	±(0.05%rdg+5d)
20KHz	1Hz	±(0.1%rdg+2d)
200KHz	10Hz
2000KHz	100Hz

• RPM 

Range	Resolution	Accuracy
240 to 20,000RPM(4cyl)	1rpm	±(0.3%rdg+5d)
120 to 20,000RPM(2cyl)

• Dwell 

Range	Resolution	Accuracy
120°	0.01°	±(0.5%rdg+50d)
90°
72°
60°
45°

• Duty Cycle  

Range	Resolution	Accuracy
0 to 100%	0.01%	±(0.5%rdg+50d)

• 1 msec Pulse Width

Range	Resolution	Accuracy
20mS	1us	±(0.5%rdg+0.15mS)
200mS	10us	±(0.5%rdg+0.15mS)