We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Red digital panel meter with 4-digit LED display, 14.2mm character height

Autonics Corp

Autonics Corp MT4W-AV-41 Digital Panel Meter AC Voltage Frequency 0-500V 100-240VAC 14.2mm 4-digit LED

SKU CH-FYS5-M2BRM MPN MT4W-AV-41

Measures AC voltage up to 500 V and frequency with a 14.2 mm, 4-digit LED display readable from -1999 to 9999, powered by 100-240 VAC

  • TypeTest Equipment
  • Color/FinishRed
  • Item Count1 pack
  • Selling UnitBox
  • Parts3 Years
  • Labor1 Year
  • Clear AC voltage readings up to 500 V with 14.2 mm LED digits
  • Frequency measurement included for comprehensive signal monitoring
  • Auto-ranging input covers eight voltage spans from 1 V to 500 V
  • Wide 100-240 VAC supply suits global installations
  • Bright 4-digit display shows -1999 to 9999 for full-range visibility

Compact 4-digit AC voltage and frequency meter

The Autonics MT4W-AV-41 is a panel-mounted digital meter designed for electricians and control-panel builders who need to monitor AC voltage and frequency in a single instrument. Its 14.2 mm red LED display shows values from -1999 to 9999, making it suitable for switchgear, distribution boards and test benches where clear local readout is required.

DIN-rail mounting with selectable input ranges

The meter fits a standard cut-out and powers from 100-240VAC 50/60 Hz, so it can be wired directly to the supply being measured. Seven selectable AC voltage ranges from 0-1 V up to 0-500 V cover most low-voltage installations, but incorrect range selection will give erroneous readings or trigger over-range indication.

Measures up to 500 V AC with frequency readout

The unit comfortably handles 500 V AC inputs and simultaneous frequency measurement for 50 or 60 Hz systems. It runs out of headroom above 500 V, so higher-voltage networks require external potential transformers; the fixed 4-digit resolution also limits precision on very low signals below 1 V.

Highlights

  • Clear AC voltage readings up to 500 V with 14.2 mm LED digits
  • Frequency measurement included for comprehensive signal monitoring
  • Auto-ranging input covers eight voltage spans from 1 V to 500 V
  • Wide 100-240 VAC supply suits global installations
  • Bright 4-digit display shows -1999 to 9999 for full-range visibility

Specifications

BrandAutonics
ModelMT4W-AV-41
TypeTest Equipment
Color/FinishRed
Item Count1 pack
Selling UnitBox
Parts3 Years
Labor1 Year

Questions about this item

How do I verify the MT4W-AV-41 is measuring correctly after wiring it?

Apply a known AC voltage within the 0-500V range and confirm the 4-digit LED shows a value between -1999 and 9999 that matches the reference source.

What comes in the box with the MT4W-AV-41 and what must I source separately?

The box contains one digital panel meter with 14.2mm red LED display; you must supply the 100-240VAC 50/60Hz power feed and the AC voltage or frequency signal wires.

Which input range should I select on the MT4W-AV-41 for my application?

Choose the range that covers your maximum expected voltage — options are 0-1V, 0-2V, 0-10V, 0-20V, 0-50V, 0-110V, 0-250V or 0-500V — so the reading stays within the -1999 to 9999 display span.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.