Ultra low-voltage and fast continuity tester. Digital multimeters are very good at precise measurements but usually not so good at continuity testing. This little tester solves the problem.
-
Open terminals voltage is 100 mV, short terminals current is 100 μA. Suitable for in-circuit testing (keep p-n junctions closed) without the risk of damaging sensitive components. DMMs usually apply several volts or milliamps to the terminals (and not always specified).
-
Resistance-dependent beeper tones with chromatic steps. Allows you to differentiate resistance by ear without moving your viewpoint. The range is 0–10 Ω with 1 Ω steps. DMMs usually have a pretty big threshold and require you to look at the screen to read the resistance, e.g. if you want to catch a bad connection.
-
Detects shorts of 1 ms with an ensured minimal beep duration of 100 ms. Suitable for finding connections by sweeping and brushing without the risk of missing a beep. Gold-plated probes are recommended.
-
Auto-hold the minimal resistance. Helps against unstable contacts, e.g. on dirty, oxidized, or lacquered boards. The hold resets when the resistance becomes greater than 10 Ω.
-
200 working hours on a single CR2032 cell. Consumes 0.7 mA when on (+0.3 mA when beeping), 0.1 μA when off. After 3 minutes of inactivity the tester switched off automatically.
-
±30 V input protection. The tester should not be used on a powered circuit, but just in case. Also saves against charged capacitors. The input impedance of the tester is 1 kΩ, so the risk of damaging an accidentally powered circuit under test is also low.
