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Pen-style voltage tester with LCD screen, flashlight and probe tip

aFe Power AC Voltage Tester Dual Range 12V-1000V/48V-1000V Electrical System Tool

SKU CH-KNFX-K6FM3

Non-contact AC voltage tester detects 12V-1000V and 48V-1000V ranges with LCD display, flashlight and buzzer alarm

  • Team affiliation1 Piece
  • Key featuresBatteries, Beep, Battery Powered, true
  • Overall height6.2 L x 0.8 W x 0.8 H inches
  • Overall width6.2 L x 0.8 W x 0.8 H inches
  • Overall length6.2 L x 0.8 W x 0.8 H inches
  • Product typeClamp
  • Non-contact detection keeps hands clear of live wires
  • Dual 12 V–1000 V and 48 V–1000 V ranges cover low and high voltage
  • LCD shows red for live, green for null with rising beep rate
  • Built-in LED flashlight aids work in dark spaces; auto-off after 3 minutes saves battery
  • CAT III 1000 V / CAT IV 600 V rating with CE mark and double insulation

Dual-Range AC Voltage Tester

The aFe Power non-contact tester identifies live conductors across two bands, 12 V to 1000 V and 48 V to 1000 V, with a single sensitivity button. It suits electricians, HVAC technicians and facility crews who need one tool for residential panels, commercial lighting and industrial control circuits. The pen-style body fits a tool pouch and operates on standard batteries. It is not for users who require current measurement, resistance ranges or true-RMS readings.

Detection Span and Limits

Low-range mode starts at 12 V for doorbell wiring, thermostat leads and low-voltage lighting; high-range mode begins at 48 V for branch circuits and motor feeds. Both ranges top out at 1000 V, so the tester stops indicating above that level. The LCD flashes red above 90 V and green below, while the beep rate rises as the tip nears the source. It cannot pinpoint a break point on shielded cable or trace conductors behind finished walls.

Alerts, Power and Safety

A colour LCD, audible buzzer and bright LED flashlight give visual, audible and area lighting feedback in dark enclosures. The unit shuts off after three minutes of inactivity to preserve the cells, and a low-battery icon appears when voltage drops under 2.5 V. Double-insulated construction meets CAT III 1000 V and CAT IV 600 V ratings with CE certification for professional use.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 80% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameaFe Power
Product typeClamp
Size & build
Overall height6.2 L x 0.8 W x 0.8 H inches
Overall width6.2 L x 0.8 W x 0.8 H inches
Overall length6.2 L x 0.8 W x 0.8 H inches
More details
Team affiliation1 Piece

Questions about this item

Will this tester safely check live circuits on my older 12 V automotive wiring?

Yes, the low range starts at 12 V and goes to 1000 V AC, so it covers 12 V automotive circuits without direct contact.

How do I confirm the tester is detecting voltage correctly after I turn it on?

Bring the probe near a known live source; the LCD turns red, the beeper sounds, and the beep rate increases as you approach the conductor.

Does the package include batteries or do I need to buy them separately?

The tool is battery powered and the specifications list batteries as a feature, so batteries are supplied in the box.

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