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BLCK PrMt Electric fence monitor

Know your fence is live.
Without walking the line.

Every pulse measured. Every change reported. A solar-powered monitor that keeps you in touch with your electric fence over LoRaWAN.

Discuss your deployment Product brief
Solar powered LoRaWAN Any energiser
BLCK PrMt electric fence monitor with its live and earth leads
Built for the fence line
Meet PrMt
Every pulseMeasured, not spot-checked
Up to 15 kVSingle or multi-strand fences
No SIM neededConnects over LoRaWAN
Your energiserWorks with any brand

A clearer view of your fence

Less ground to cover.
More certainty along the line.

One PrMt tells you whether a fence zone is live. Place more along a long fence and the readings help show where a problem lies.

Explore the fence line

Swipe to explore the fence diagram

Three PrMt monitors along an electric fenceThe fault is between B and C. A and B still read normal voltage. C reports the fence down. With monitors along the line, those readings narrow the stretch that needs attention.EnergiserFault between B and CABC
Monitor A8.9 kVLive
Monitor B8.8 kVLive
Monitor C0.0 kVFence down
Illustrative scenarios. These are example readings, not live fence data.

The fault is between B and C.

A and B still read normal voltage. C reports the fence down. With monitors along the line, those readings narrow the stretch that needs attention.

A report every 5 minutes

Lowest, highest and average voltage, pulse count, battery level and temperature. Adjust the interval to suit your deployment.

A report when things change

Fence down, high voltage, a disconnected earth lead, low battery or a restarted device each trigger an event report.

A closer look at PrMtPrMt cutaway showing the solar panel, rechargeable battery and measurement electronicsSolar panel. Battery. Pulse monitoring.
One enclosure.

Its own power. Its own place on the fence.

Made for life
out in the field.

PrMt clips onto the fence at any post and works with your existing energiser. No drilling. No mains connection.

Solar powered

The built-in panel and rechargeable battery keep PrMt running through multiple days without sun.

Weatherproof enclosure

Sealed, UV-stabilised polycarbonate for outdoor life in sun, rain and dust.

A quick start with USB-C

Charge before installing or top up after a long cloudy spell. Battery replacement is not expected for over a year.

Missed messages, recovered

Several days of readings stay on board. Confirmed messages and automatic resending recover data the network missed.

From fence post to fence data

Mount. Connect. Report.

A post, a live wire and an earth connection. PrMt handles the measurement; your LoRaWAN network carries the readings.

  1. 01

    Mount

    Strap PrMt to a fence post through the mounting flanges. Leads and mounting straps are supplied.

  2. 02

    Connect

    Attach the red lead to a live wire and the green-and-yellow lead to earth.

  3. 03

    Report

    PrMt joins the LoRaWAN network and reports the fence condition every few minutes.

PrMt on your fenceLoRaWAN gatewayNetwork serverYour systems or BLCK

Choose the data setup that fits

Your network.
Or our helping hand.

PrMt speaks standard LoRaWAN. Run the data side yourself with our decoder, or let BLCK connect, decode and manage it for you.

Your network, your data

PrMt Direct

Connect PrMt to your own LoRaWAN network and feed readings into the systems you already use. Runs entirely without BLCK.

  • PrMt units, leads and mounting straps
  • Message decoder for your network server
  • Message and settings documentation
Discuss PrMt Direct

We run the data side

PrMt +
BLCK Data Pipelining

BLCK connects your units, decodes and stores every reading, and gives your team a web platform and API for clean fence data.

  • Everything in PrMt Direct
  • Units connected and onboarded for you
  • Readings decoded, checked and stored
Discuss managed data

With BLCK Data Pipelining

From the fence to the people who need the data.
Web dashboard
Live readings and history charts for every unit, in any browser.
Readings & export
Full readings tables, with CSV or JSON export for any date range.
Open API
Connect your own systems using secure, per-user API keys.
Team access
Bring in your team and choose who sees which units.
Remote configuration
Change reporting, run a self-test or restart a unit without a visit.
Fleet health
Watch battery and device status across every unit.

Where the fence matters

For the boundaries
you look after.

  • Wildlife conservancies & reserves
  • Livestock farms & ranches
  • Crop protection
  • Human–wildlife conflict barriers
  • Commercial & industrial perimeters
  • Homes & estates

The technical details

Small on the post.
Clear on the details.

Any energiser brand. Single or multi-strand fences. Standard LoRaWAN on the EU868 frequency plan.

Measurement & reporting
Fence voltage
Up to 15 kV, either pulse polarity; higher voltages flagged
Sampling
Every energiser pulse
Routine report
Lowest, highest and average voltage; pulse count; battery level; temperature
Reporting interval
Every 5 minutes, adjustable
Event reports
Fence down, voltage too high, earth lead disconnected, battery low, device restarted
Wireless & data delivery
Network
Standard LoRaWAN, EU868 frequency plan
Range
Kilometres to a gateway, depending on terrain
Delivery
Confirmed messages; missed data resent automatically
On-board memory
Several days of readings and event history
Managed services
Remote configuration, dashboard, export and API with BLCK Data Pipelining
Power & enclosure
Power supply
Built-in solar panel and rechargeable battery
USB-C
Quick-charge start-up and top-up
Without sun
Runs through multiple days of cloud
Battery replacement
Not expected for over a year
Enclosure
Sealed, UV-stabilised polycarbonate
Mounting
Pole straps through the mounting flanges
Connections
Live lead and earth lead, supplied
Dimensions
240 × 161 × 62 mm; 280 mm with mounting flanges

Specifications may change without notice. See the product brief for the complete specification.

PrMt enclosure: 161 mm wide, 240 mm high, 62 mm deep; 280 mm including mounting flanges161 mm240 mm62 mmFront
280 mm including mounting flanges.
Drawing not to scale.
Download product brief
Livestock behind a fence in the field

BLCK PrMt

A long fence line.
A closer connection.

Tell us about your fence, your network and the data you need. We’ll help you work out the right PrMt setup.

Talk to BLCK hello@blck-iot.com