Electrical Measurement

Digital Test Light w/ Load Tester 28800

Works as a regular test light and when you push the button on the tool it applies an 800mA load at 12V DC to easily check for voltage drop on circuits. The display will indicate the voltage drop when the button is pushed. Displays voltage under load to...

Replacement Bulb (for 28400) 28440

Lisle Tools Catalog

12V Heavy Duty Circuit Tester 28400

A heavy duty circuit tester for lifetime use. The probe, handle, cord and clamp are reinforced for extra durability. Comes with a strain relief spring on the cord. Lisle Tools Catalog

24V Replacement Bulb (for 27430) 27460

Lisle Tools Catalog

24V Heavy Duty Circuit Tester 27430

Works on any circuit up to 28 volts including many heavy duty applications on large trucks and farm implements. Heavy duty probe, cord and clamp. The probe is insulated with high-visibility shrink tubing to prevent the possibility of shorting the side...

Replacement Bulb (for 26250) 26270

Lisle Tools Catalog

Low Circuit Tester 26250

Helps locate shorts or breaks in wiring. Complete with insulated grounding clip. Lisle Tools Catalog

Replacement Bulb (for 24550) 24560

Lisle Tools Catalog

Computer Safe Circuit Tester 24550

Safe for automotive computers. Won’t damage sensitive electronic components. Draws less than 21 mA. at 12 volts DC. Operating range 3-28 volts. The red light indicates positive polarity, green indicates negative polarity. Lisle Tools Catalog