Description Voltage Tester Key Specifications Here’s a summary of the technical specifications for the Mestek AC40: Specification Details Voltage Detection Range Dual-range: 12-1000V AC (high sensitivity) or 48-1000V AC (low sensitivity) Detection Type Non-contact (inductive sensing via pen tip) Safety Ratings CAT III 1000V / CAT IV 600V; CE certified; Double insulation Alarm Indicators LED lights (red for detection, orange for high sensitivity mode), buzzer sound, and vibration Additional Features LED flashlight for low-light use; Auto shut-off after 15 minutes of inactivity; Low battery indicator Power Source 2 x AAA 1.5V batteries (not included) Dimensions Approximately 160 x 28 x 20 mm (6.3 x 1.1 x 0.8 inches) Weight About 46g (1.6 oz) – lightweight and pocket-sized Durability IP67 waterproof and dustproof; Drop-resistant up to 2 meters Operating Temperature 0°C to 40°C (32°F to 104°F) Features and Functionality The Mestek AC40 stands out for its user-friendly design and practical features tailored for real-world electrical work Dual Sensitivity Modes Low Sensitivity (48–1000V AC): Default mode with red LED indicator. Best for household wiring, outlets, and high-voltage circuits to reduce false positives. High Sensitivity (12–1000V AC): Activated via range button (orange LED indicator). Ideal for detecting low-voltage sources like doorbells, thermostats, power strips, or irrigation systems. Multi-Mode Alarms Bright red flashing LEDs (intensity varies with voltage strength: low, medium, high). Audible buzzer (traffic-light style: short beeps for low voltage, continuous for high). Vibration feedback for noisy environments. Built-in Flashlight Integrated LED light for illuminating dark panels, under-sink areas, or tight spaces. Live/Null Wire Detection Differentiates live wires from neutral/ground lines. Identifies wire breakpoints by scanning along cables. Ergonomic Design Slim pen shape with pocket clip for portability. Soft-touch button and non-slip grip for one-handed operation, even with gloves. Self-Test Function Green LED confirms functionality at power-on. Battery-low warning prevents unexpected failures.
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