Overview
SGT Systems Limited's Agriculture IoT family is a 10-SKU range of field-grade hardware that brings continuous, data-driven decision support to Bangladeshi farms, plantations, aquaculture operations, agricultural research stations and food-supply businesses. The products were developed in collaboration with agricultural universities and progressive commercial growers to ensure that what we ship is genuinely deployable in flood-prone deltaic conditions, intense monsoon, high humidity and the salinity gradients that characterise coastal Bangladesh.
The economic case for agritech in Bangladesh has shifted decisively in the last five years: irrigation diesel costs, fertiliser prices and labour shortages now make a typical soil-moisture-driven irrigation deployment pay back within one growing season. Our role is to make that technology accessible, supportable and affordable for buyers ranging from individual commercial farmers up to corporate farming groups, contract-growing aggregators, NGOs and government agricultural programmes.
Every product in the agriculture range is designed for self-sufficient outdoor operation — solar-powered, weatherproof, configurable from a phone, and built around long-range, low-power wireless so a single gateway can monitor up to 100 hectares without trenching cable. Data is presented in our agronomy dashboard, which serves both the field manager (alerts, daily summaries) and the agronomist (multi-season analytics, irrigation efficiency, yield correlation).
This spec sheet describes the product family at a category level. Individual SKU datasheets carry the per-product calibration curves, mechanical drawings and accessory lists.
Product range
| Product | Application | Connectivity | Power | Indicative Lead Time |
|---|---|---|---|---|
| Soil Moisture & EC Probe | Multi-depth soil moisture, conductivity and temperature | SDI-12, RS-485, LoRaWAN node | Battery node 3-year, or 12 VDC | 2 weeks |
| Automatic Weather Station | Rainfall, wind, solar radiation, temperature, humidity, pressure | LoRaWAN, 4G, satellite optional | Solar 20 W + LiFePO₄ | 3–4 weeks |
| Smart Irrigation Controller | Sensor-driven valve scheduling for drip, sprinkler and flood systems | LoRa, RS-485, 4G uplink | Solar / 24 VAC | 2–3 weeks |
| Pond / Aquaculture Sensor | Dissolved oxygen, pH, temperature, ORP for shrimp and fish ponds | RS-485, LoRaWAN | Solar with submersible cable | 3 weeks |
| Livestock Monitoring Collar | Cattle activity, rumination, location tracking | LoRaWAN, GPS | Coin / AA Li, 18–24 months | 4 weeks (import) |
| Farm Gateway / LoRaWAN Base Station | Concentrates all field sensors, edge buffering, 4G backhaul | LoRaWAN gateway, 4G, Ethernet | Solar / 230 VAC | 2 weeks |
Common specifications
Communication protocols
- Field wireless: LoRaWAN 1.0.4 (AS923, IN865) with up to 10 km line-of-sight range from gateway to node
- Backhaul: 4G LTE Cat-1 with auto-fallback, Ethernet on indoor gateways, optional satellite for off-grid sites
- Sensor wiring: SDI-12 for soil probes, RS-485 Modbus for water sensors, analog 4-20 mA for legacy instruments
- Cloud: MQTT over TLS to SGT AgriCloud or customer-hosted ChirpStack / The Things Stack
Power
- Solar-powered field nodes: 5–20 W panels with 8–40 Ah LiFePO₄ batteries, designed for 14 days of overcast operation
- Battery-only sensor nodes: industrial Li-SOCl₂ with 2–7 year life depending on reporting interval
- Mains-powered gateways: 90–300 VAC self-regulating, UPS-ready
- Livestock collars: replaceable LiSoCl₂ / LiMnO₂ cells, 18–24 month service interval
Environmental and mechanical
- Operating temperature: −10 °C to +65 °C (soil sensors to +85 °C in-soil)
- Ingress protection: IP67 for soil probes and submersible aquaculture sensors, IP65 for gateways and weather stations
- UV-stabilised enclosures certified for tropical sun exposure
- Mounts: T-post and pole mounts standard, custom field-readable signage available
Accuracy and resolution
- Soil moisture: ±3 % volumetric water content, 0–100 % range
- Soil EC: 0–23 dS/m, ±5 % of reading
- Dissolved oxygen: 0–20 mg/L, ±0.3 mg/L (optical sensor)
- pH: 0–14 pH, ±0.1 pH with quarterly calibration
- Rain gauge: 0.2 mm tipping bucket, ±2 %
- Wind speed: 0–60 m/s, ±0.3 m/s or 1 %
Compliance
- CE, FCC, RoHS on electronics
- BTRC type-approval on 4G and LoRa products
- Food-contact compliance on submersible aquaculture sensor housings
Typical deployment architecture
[Soil probes / Weather / Aquaculture sensors / Livestock collars]
| (LoRaWAN over-the-air)
v
[Farm Gateway / LoRaWAN base station]
| (MQTT / 4G or Ethernet)
v
[SGT AgriCloud or Customer LNS]
|
v
[Agronomy dashboard, mobile alerts, irrigation API]
|
v
[Irrigation controller / Aerator relay]
A typical 50-hectare farm runs 10–30 field sensors and one gateway. Sensors transmit every 10–60 minutes (configurable) over LoRaWAN. The gateway buffers data and forwards it to the cloud, where it is normalised, scored against the configured agronomy rules, and pushed to a mobile dashboard. Closed-loop control — such as opening an irrigation valve when soil moisture drops below the trigger — is executed either by an SGT irrigation controller at the field, or by the customer's existing irrigation system using our REST API.
Industries we serve in this category
- Commercial field farming: rice, maize, jute, vegetables — irrigation optimisation and yield mapping
- Horticulture and greenhouses: microclimate control, CO₂ dosing, fertigation
- Aquaculture: shrimp and fish farms with dissolved-oxygen alerts and aerator control
- Plantation crops: tea, coffee, fruit orchards — frost / disease alerts, irrigation
- Livestock and dairy: cattle activity, heat-detection, herd location
- Research, NGOs and government agri-programmes: climate-resilient farming trials, extension services
Customisation & OEM
Most agriculture deployments require some level of localisation. We routinely customise dashboards to the local language (Bangla / Hindi / Burmese), adapt agronomy rules to specific crops and varieties, package multi-sensor "starter kits" branded for NGOs or extension programmes, and integrate our hardware with the customer's existing farm-management software via REST APIs. Hardware customisation includes solar-panel sizing for specific latitudes, anti-tamper enclosures for high-risk sites, and custom cable lengths for deep-soil monitoring.
For OEM partners, we offer private-label hardware and a dedicated multi-tenant version of AgriCloud with the partner's branding on dashboards, mobile apps and reports.
Ordering & logistics
- Lead times: in-stock soil and weather sensors ship in 2 weeks; gateways and irrigation controllers 2–4 weeks; livestock collars 4–6 weeks (imported components)
- MOQ: 1 unit for pilots, 10+ units for commercial farm pricing, 100+ for NGO / programme pricing
- Warranty: 12-month standard manufacturer warranty; sensors against drift covered for 6 months from commissioning
- Shipping: nationwide courier within Bangladesh in 3–5 days; regional South-Asian shipping 2–4 weeks
- Recurring services: AgriCloud SaaS billed annually per sensor; optional annual probe re-calibration service
Support & documentation
Agriculture IoT is unforgiving of poor commissioning — a soil probe installed at the wrong depth or a weather station shaded by a building will quietly produce useless data for an entire season. To prevent this, every SGT agriculture deployment includes a site-survey checklist, an on-site or remote commissioning session with our agronomy-trained engineers, and a 90-day post-commissioning review where we audit the data and tune the alerting thresholds. Customers on annual support also receive seasonal firmware updates, dashboard improvements, and access to our quarterly best-practice webinars.
For project enquiries, demos at our Dhaka office, or NGO / extension-programme pricing, please use the contact form.
Reference deployments and outcomes
SGT Agriculture IoT products are deployed across commercial farms, shrimp hatcheries, tea estates and research stations in Bangladesh and the wider region. A typical commercial-farm deployment instruments a 50–100 hectare site with 12–25 multi-depth soil probes, one automatic weather station and one solar-powered LoRaWAN gateway, feeding into our AgriCloud dashboard that the farm manager checks daily on a phone. In this configuration, customers typically report 20–30 % reduction in irrigation water and diesel consumption within the first season, alongside a measurable improvement in yield uniformity across the field.
A typical aquaculture deployment instruments 10–40 ponds with floating dissolved-oxygen and pH sensors and a single shore-mounted gateway, with the dissolved-oxygen alerts integrated to automatic aerator-control relays. Customers report dramatic reductions in unexplained stock loss — the dissolved-oxygen sensors detect overnight crashes in time for aerators to recover the pond before mass mortality occurs.
Agronomy support
Hardware alone does not change farm outcomes — interpretation does. SGT's agronomy team works with each commercial customer during onboarding to configure crop-specific thresholds (root-zone moisture targets by growth stage, optimal pH and DO bands for the species being farmed, frost / disease early-warning rules for the region's climate). For NGO and government programme customers, we provide standardised crop packs covering rice, vegetables, fruit and aquaculture species commonly cultivated in Bangladesh, and we conduct seasonal review sessions where data from the previous season is used to fine-tune the next.
The AgriCloud dashboard is multi-lingual (Bangla, English) and designed for low-bandwidth conditions: the mobile app works well on 2G, caches recent data offline, and presents the most important alerts on a single home screen so that a non-technical farm manager can act on them without training.
Data ownership and sharing
Farm data is sensitive — both commercially (yields, input usage) and personally (location, holdings). SGT's policy is unambiguous: data collected from a customer's farm belongs to the customer. We do not sell, share, aggregate or anonymise farm data for sale to third parties. Customers can export their data at any time in CSV or via API, and can request deletion of all historical data when their contract ends. For NGO and government programme customers, anonymised aggregate data sharing is supported but only on explicit written instruction from the programme operator and with each participating farm's consent.
Frequently asked questions
What if there is no mobile coverage at the farm?
The LoRaWAN gateway can buffer data for up to 30 days on internal storage. For permanently off-grid sites we offer a satellite-uplink variant of the gateway, and for very remote research stations we can deliver a complete off-grid kit with solar power for both the gateway and a local visualisation tablet.
How are probes calibrated?
Soil moisture probes are factory-calibrated against a reference soil type, and field-calibrated against the customer's actual soil during commissioning. pH and DO probes ship with calibration kits and require quarterly re-calibration; we offer an annual calibration service at our Dhaka office or, for fleets above 20 sensors, on-site.
Can the system control irrigation automatically?
Yes. Our smart irrigation controller takes commands from AgriCloud's rules engine and operates valves directly. We can also integrate with existing irrigation systems (Netafim, Rivulis, Hunter) over their published protocols.