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Blue digital fence tester with 57in probe wire and LCD display

aFe Power EM555 Digital Fence Tester 9.9kV 57in electrical system tool

SKU CH-9WP1-VGGEZ MPN EM555

Measures electric-fence pulse voltage from .3 to 9.9 kV on a 57-inch lead with auto power-off after four seconds

  • Team affiliation1 Piece
  • Key featuresDigital Fence Tester EM555; English Manual;, Battery Powered
  • Overall height7 L x 3.5 W x 17.5 H centimeters
  • Overall width7 L x 3.5 W x 17.5 H centimeters
  • Overall length7 L x 3.5 W x 17.5 H centimeters
  • Product weight0.66 lb (0.3 kg)
  • Measures fence voltage from .3 to 9.9 kV for accurate diagnostics
  • 57-inch test lead reaches distant fence lines easily
  • Auto power-on at pulse detection saves battery life
  • Auto shut-off after 4 seconds with no pulse extends runtime
  • Compact clamp design at .66 lb fits in tool bag

Pulse voltage measurement

The aFe Power EM555 is a digital fence tester designed to measure pulse voltages on electric fence lines and controllers. It displays voltage levels from 0.3 kV to 9.9 kV on an LCD screen. The unit includes a 57-inch test lead and a ground probe for connection to the fence wire and soil. Smart power technology activates the tester only when a pulse is detected and shuts it down after roughly four seconds of inactivity.

Routine maintenance and fault finding

This tool suits farmers, property owners and maintenance staff who need to verify fence voltage or locate breaks in the line during regular checks. It is not intended for users who require continuous monitoring, data logging or alarm outputs. Buyers needing to test non-pulsed DC or AC circuits should look at a different class of electrical tester.

9.9 kV maximum reading

The single specification that determines suitability is the 9.9 kV upper measurement limit. If the fence system can produce pulses above this value, the tester will not provide a valid reading and a higher-range instrument is required.

How it compares

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

Price $50.99
Pricier than about 75% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameaFe Power
Product typeClamp
Size & build
Overall height7 L x 3.5 W x 17.5 H centimeters
Overall width7 L x 3.5 W x 17.5 H centimeters
Overall length7 L x 3.5 W x 17.5 H centimeters
Product weight0.66 lb (0.3 kg)
More details
Team affiliation1 Piece

Questions about this item

What battery does the EM555 tester need and how often must it be changed?

The unit is battery powered and uses smart power technology that activates only when a pulse is detected then shuts off after about four seconds without a pulse to extend battery life.

At what voltage does the LCD display stop reading on the EM555?

The display indicates voltage levels from 0.3 kV up to 9.9 kV so the upper limit is 9.9 kV.

How much heat or noise does the EM555 produce during all-day fence checks?

The tester has no moving parts and only powers on briefly for each pulse so it generates no audible noise and negligible heat during extended use.

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