Model ITR-DLSC-77 — an 8-digit IP67 event logger that proves your lightning protection system is doing its job, one recorded strike at a time.
A lightning protection system can stand for decades without visible evidence that it has ever operated. The Digital Lightning Strike Counter closes that gap: fitted in-line on the down conductor, it registers every discharge that passes to earth and holds the total on an 8-digit display, sealed in an IP67 enclosure for permanent outdoor duty.
Model ITR-DLSC-77 senses both positive and negative discharge polarity (+VAC / -VAC) with adjustable sensitivity, so the count reflects genuine lightning events across a wide 1kA to 200kA range rather than incidental transients. The mechanism is powered entirely by the discharge current itself — there is no battery to replace and no external wiring to maintain.
Because it mounts independently of the air terminal, this counter is equally suited to a new installation, a retrofit onto an existing lightning protection system of any make, or a straight replacement for a counter that has failed or aged out of service.
| Model | ITR-DLSC-77 |
|---|---|
| Display | 8-digit, non-resettable event count |
| Ingress protection | IP67 — sealed for permanent outdoor mounting |
| Sensing input | +VAC / -VAC polarity, adjustable sensitivity |
| Discharge range | 1 kA – 200 kA |
| Power source | Self-powered by the discharge current — no battery required |
| Mounting | In-line on the down conductor, threaded terminals |
| Certification | CE marked |
Yes. It mounts in-line on the down conductor with standard threaded terminals, so it works with ESE terminals, conventional Franklin rods, or any existing air termination system already installed on site.
This is the same family of instrument sold as a standalone unit — useful for retrofitting a counter onto an existing lightning protection system, replacing a failed or outdated counter, or specifying the counter separately from the air terminal in a tender.
No. The counting mechanism is triggered and powered by the discharge current itself passing through the conductor, so there is no battery to replace or external supply to wire in.
The sensitivity threshold is adjustable so the counter registers genuine lightning discharges rather than switching transients or minor induced currents, keeping the logged count meaningful for maintenance and insurance records.
The 8-digit display is read directly through the IP67 window during a routine site inspection — no tools or power connection required. Counts accumulate as a permanent record unless deliberately reset by an authorised technician.
Tell us your down conductor size and mounting height — we'll confirm compatibility and quote the same working day.
