Custom 1-of-1
Each device is purpose-built for your exact use case, not a generic shelf unit.
- Battery life on sensors
- 2 yr

Devices with optional LoRa for remote farms, mine sites and legacy equipment.
Real readings. Real devices. Right now.Connecting to the platform
Drop them in and start collecting data from day one.
Real-time water level, flow rate, and borehole/pump temperature, solar powered with direct cellular upload and optional radio modules.
Industrial temperature nodes for cold storage, silos, server rooms and process equipment, available on Wi-Fi, LoRa, Standard Radio, and Cellular.
Non-invasive CT clamp monitoring for V, A, W, kWh and power factor across single or three-phase systems.
Single-channel relay control for pumps, motors, and machinery: trigger manually, on a schedule, or via sensor events.
Non-invasive rotational speed monitoring for motors, fans, conveyors and turbines, stall alerts included.
Not on the list? We build the hardware and software. Our device plugs into your existing equipment and connects it to the cloud.
View detailsOne device, the link your site needs, and a platform that keeps every reading.
Each device is purpose-built for your exact use case, not a generic shelf unit.
Retrofit existing equipment with advanced IOT without replacing your assets.
Add long-range, low-power mesh radio when your deployment needs it.
Instant breach alerts via SMS or the dashboard, and historical trends for every device.
Build your own custom IOT devices, fast.
Superluminal is a firmware and integration framework designed for industrial and agricultural engineers who need reliable devices with optional LoRa connectivity without starting from scratch.
#include "superluminal.h"// Define your devicestatic sl_node_t node;int main(void) {sl_node_init(&node, "BH-Monitor-01");sl_set_network(&node, LORA_915);sl_add_sensor(&node, BOREHOLE_LEVEL, A0);sl_add_sensor(&node, PUMP_STATUS, D3);sl_set_report_interval(&node, 60); // secondssl_begin(&node);for (;;) {sl_tick(&node); // handles LoRa, OTA,// sleep, and telemetry}}
Hardware, mobile data connectivity, cloud data storage, and ongoing support. No surprise bills, no contract lock-in.
| Item | From | What it covers |
|---|---|---|
| Single Device | R450+ once-off | Hardware, setup & configuration included |
| Monthly Per Device | R50+ / month | Data, connectivity & cloud storage included |
| Superluminal SDK | Contact us | Framework licence for in-house builds |
Every device is custom-built for your application, so you define what normal operating conditions look like, not us.
All GreyLink devices are covered for 5 years under standard use. You agree with us upfront what normal operating conditions are, so the warranty is always fair and clear.
Your GreyLink device is covered forever, under the operating conditions you specify. Even many years down the line, your device will be replaced. No expiry. No fine print.
Every GreyLink device is custom-built for your specific application, whether that's a pump running 18 hours a day, a sensor in a −20 °C cold room, or a meter strapped to a high-vibration motor. At commissioning, we document your exact operating conditions together, and they become your warranty baseline.
Full warranty termsFrom concept to deployment, every part of the GreyLink IOT journey happens right here in South Africa.
Software Engineer

Electronic Diagnostic and Repair

Founder & Lead Engineer
The university-student team behind GreyLink IOT, bootstrapping practical solutions for real-world operations.
Our engineers, developers, and support staff are all based in South Africa, providing fast, knowledgeable, and timezone-friendly assistance.
Every hardware design and firmware architecture is conceived and refined locally, built for South African conditions, power realities, and environments.
Devices are assembled right here in RSA, supporting local industry and ensuring strict quality control from the first component to the final inspection.