Martindale TEK404 Continuity Tester
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.
Continuity Tester with Audible & Visual Indication.
Probe Voltage: 9V
Test Current: 5mA
Resolution Range: 0 - 170kΩ
audible, 0 - 8kΩ visual
Output: 85dB minimum at 30cm, zero resistance
Red LED illuminates below mA, Audible Frequency: 2.8kHz ± 0.1 kHz
Internal fused safety cutout protects to 250V AC/DC
Supplied with unfused leads
Requires a MN1604 battery.