Alerts on OGLAS — Off-Grid Local Alert System

Smoke & Gas

Mon, 01 Jan 0001 00:00:00 +0000

A smoke alarm nobody can hear from the house is no alarm at all. The OGLAS Smoke & Gas sensor puts detection in the buildings that matter on a remote site — and gets the alert to you wherever you are.

What it does

Detects smoke — early-warning detection in sheds, workshops, and stores well away from the house.
Detects combustible gas — LPG, methane, and the like, around gas stores and pump houses.
Detects toxic gas — carbon monoxide in a generator shed or workshop.
Alerts immediately — straight to the bell, every bell on site, and (with Cloud) a push to your phone. This is the message that doesn’t wait.

Honest scope

This is monitoring and early warning for remote, unattended buildings, not a replacement for the certified smoke alarms your dwelling is required to have. It covers the sheds and outbuildings those alarms never reach.

Bell

Mon, 01 Jan 0001 00:00:00 +0000

The OGLAS bell is the noise-maker. It sits in the house, the office, the shed — wherever you want to hear about things — and turns sensor activity into sound.

What it does

There are three ways the bell rings:

Pattern match on incoming sensor activity — by default, when the gate opens, the bell triggers a single buzz. Rate-limited so a flaky link can’t replay the same event into a buzz-storm.
Direct ring command — a single, immediate buzz with no cooldown. Use this for manual or scripted pings from the hub.
Alarm mode — a repeating tone for a configurable window (default 60 s). Re-issuing the command extends the window.

Plus remote mute/unmute, and an on-board mute button that toggles silence with a fast-flashing LED to show the bell is alive but quiet.

Noise

Mon, 01 Jan 0001 00:00:00 +0000

Sound is a surprisingly good sensor. The OGLAS Noise sensor reports a sound level — not a recording — so you can tell, from anywhere, whether something is running, alarming, or happening when it shouldn’t be.

What it does

Measures sound level — ambient dB over time, with thresholds you set.
Detects “running” — a pump, compressor, or generator is audibly on; pair that with Power Monitoring to confirm it’s working.
Detects “alarming” — another alarm sounding (a separate smoke alarm, a reversing beeper, a siren) becomes an OGLAS alert.
Detects “activity” — noise in a yard or shed that should be quiet overnight.

It reports a level and threshold crossings only — no audio leaves the device, which keeps it private and keeps the data tiny — see Your data is your data.

Electric Fence Active

Mon, 01 Jan 0001 00:00:00 +0000

An electric fence that’s stopped pulsing is just a fence — and animals work that out fast. The OGLAS Electric Fence Active sensor confirms your fence is live, on a schedule you set, and raises the bell the moment it isn’t.

What it does

Detects fence pulses — non-contact pickup (capacitive coupling to the fence wire), no high-voltage wiring into the device.
Reports state periodically — default interval is 5 minutes; configurable.
Reports immediately on state change — fence drops from active to inactive (or comes back), the device fires off a message right away rather than waiting for the next interval. This is the alert that matters.
Tracks pulse rate — a healthy charger has a known cadence. Drift from the expected rate (broken wire shorting to ground, low-battery charger) shows up before the fence dies completely.

Common failure modes it catches

Animal grounding — a sheep tangled in the wire pulls the fence voltage down. Pulses still happen but at much lower amplitude. Worth alerting.
Broken wire — fence is “on” at the charger but doesn’t reach the far end. Catch this by deploying multiple Electric Fence sensors at known points along the line.
Charger fault / dead battery — fence is silent. Most-common failure mode and the one that costs the most.
Vegetation grow-in — gradually loading the fence; the pulse-rate trend will show it before it fails.

Hardware

Battery-powered sensor with a non-contact pickup. The pickup is a small antenna held a few centimetres from the live wire — induced voltage from each fence pulse triggers a counter inside the device. No galvanic connection to the fence, so no risk of energiser pulses entering the electronics.

Monitoring and alerts

Mon, 01 Jan 0001 00:00:00 +0000

Sensors are only useful if someone notices the readings. OGLAS does both halves: a live picture of what’s happening right now, and an audible nudge when something needs your attention.

Real-time monitoring

The hub confirms every sensor message as it comes in, so you can see at a glance which sensors are healthy and which ones haven’t checked in.

Large display — a wall-mount dashboard that pages through every sensor on your network.
Small display — a desktop unit showing your two most important sensors at a glance.
Local dashboard — if you’d rather use a phone or laptop, Local exposes a full web UI on your own network.

All three read from the same on-device log. Nothing leaves your site.

Temperature

Mon, 01 Jan 0001 00:00:00 +0000

Not every temperature is the weather. The OGLAS Temperature sensor watches a specific point — and tells you the moment it leaves the range it’s supposed to be in.

What it does

Reads one or more probes — a single point or several on one node.
Alerts on thresholds — too warm, too cold, or out of a band, straight to the bell or your phone.
Logs the trend — so you can see the freezer creeping up for a day before it actually failed.

Where it goes

Freezer & cool room — the classic: catch a failure before the contents spoil.
Water tank & hot water — frozen-pipe risk at one end, legionella-safe storage at the other.
Kiln, oven, smoker — confirm a firing or curing schedule held.
Engine & bearing — an overheating bearing or engine as an early fault signal.
Glasshouse & shed — keep growing or stored goods in range.

Hardware

Thermistor, RTD, thermocouple, or a digital probe (DS18B20 and friends) to suit the range, on an OGLAS analog-class node. Mains or battery depending on the site.

Trap Trigger

Mon, 01 Jan 0001 00:00:00 +0000

Checking traps is the same problem as checking troughs: a long drive, mostly to find nothing. The OGLAS Trap Trigger sensor tells you the instant a trap fires, so you only make the trip when there’s a reason to — and you make it quickly.

What it does

Detects activation — a switch or sensor on the trap mechanism fires the moment it’s triggered.
Alerts immediately — straight to your hub, the bell, the cab display, or your phone via Cloud.
Time-stamps and locates — when it fired, and (with GPS) which trap, so you go straight to it.
Runs for months — it sleeps and waits for a single event, so battery life is measured in seasons.

Why it matters

For pest and feral control, a sprung trap left for days is both ineffective and inhumane. Knowing within minutes means you can dispatch or release quickly, and reset the trap so it’s working again sooner.

Frost

Mon, 01 Jan 0001 00:00:00 +0000

A frost you find out about at dawn is a frost you’ve already worn. The OGLAS Frost sensor watches the conditions that lead to one and warns you — and your gear — in time to act.

What it does

Tracks air and ground temperature — at canopy and at ground level, where frost actually settles.
Reads dew point — temperature plus humidity tells you how close you are to forming frost, not just how cold it is.
Warns early — an alert as conditions approach the threshold, not once the damage is done.
Triggers protection — fire frost fans, an under-tree sprinkler, or a heater via a Smart Switch, automatically, at 2 am, without you standing in the cold.

Hardware

Paired temperature probes (air and ground) and a humidity sensor on an OGLAS node, sited in the block you’re protecting. Battery + solar — see Off-grid power.

Air Quality

Mon, 01 Jan 0001 00:00:00 +0000

The OGLAS Air Quality sensor watches what’s in the air where people, animals, or plants are — and raises the alarm when a level climbs into a range that matters.

What it does

CO₂ — ventilation and comfort indoors; growth in a glasshouse; build-up in a confined space.
Methane (CH₄) — biogas, manure pits, and stores; this one also overlaps Safety (it’s combustible).
Particulates (PM2.5 / PM10) — dust, smoke haze, and air quality on fire-season days.
Temperature & humidity — the context every air reading needs.

Levels log to your hub with alerts on threshold, and can drive ventilation directly.