* CONTINUITY TESTER WITH AUDIBLE INDICATION TEK402 :
The Martindale TEK402 is a low cost, easy to use continuity tester with audible indication. The loud buzzer makes it easy to use in noisy environments.
* CONTINUITY TESTER WITH AUDIBLE & VISUAL INDICATION TEK404 :
The Martindale TEK404 is a low cost, easy to use continuity tester. It has audible and visual indication plus overvoltage protection. It has the same loud buzzer as the TEK402, giving a very clear signal of continuity.
