Industrial IoT gateways,
built to spec.
We design the boards, write the firmware and own the protocol — so the data moves from your RS-485 bus to your cloud reliably, securely, and with no gaps when the network drops.
- 3000 Tags per gateway
- 12+ Gateway & I/O models
- 4G · LAN · WiFi · LoRa Connectivity options
- Made in India Designed & built in Chennai
Deployed where uptime is non-negotiable
- Energy & Power
- Water & Utilities
- Manufacturing
- Solar & Renewables
- Cold Chain
- Smart Cities
Pick a gateway. Keep the platform.
From the flagship MAX Series to compact I/O cards, every Wiman device speaks the same Modbus-to-cloud language — so a pilot scales into a fleet without re-engineering.
MAX Series
2 MODELSAdvanced dual-network industrial gateways
Our flagship gateways for large, mission-critical deployments. Up to 3000 tags, dual upstream servers and dual-path connectivity (4G + LAN/WiFi) with optional LoRa for the hardest-to-reach field devices.
Explore the range PRO Series
3 MODELSSecure, server-redundant monitoring
Hardened gateways with SSL/TLS, dual-server publishing and battery-backed operation — built for utilities and process plants where data must never be lost.
Explore the range LITE Series
3 MODELSReliable, cost-effective field gateways
The workhorse range for everyday remote monitoring — up to 1800 tags, optional onboard relay and a choice of 4G, Ethernet or WiFi backhaul at an attractive price point.
Explore the range
IO Cards
3 MODELSAnalog & digital field expansion
Modbus RTU I/O modules that turn raw sensors, transmitters and contacts into clean register data any Wiman gateway can read and publish.
Explore the rangeConverters
1 MODELBridge legacy serial to Ethernet
Drop-in protocol converters that bring serial Modbus RTU equipment onto modern TCP/IP networks — no rewiring of the existing plant.
Explore the range12 models
Twelve devices. One platform.
Every gateway, every IO card, every converter we ship — laid out side-by-side. Hover for the headline spec; click for the full datasheet.
From sensor to dashboard — engineered end to end
A Wiman gateway sits at the edge, polls your field devices over Modbus, maps and buffers the data, then publishes it securely to your platform. If the link drops, nothing is lost.
Sensors, meters & PLCs
Wiman gateway
Secure backhaul
Your dashboards
When the network drops, nothing is lost
Every Wiman gateway logs and time-stamps readings at the edge, then keeps publishing the moment connectivity returns — in order, with no gaps. On-device triggers raise alarms locally, so your plant reacts even before the cloud does.
- Store-and-forward buffering rides out 4G and power outages
- On-device triggers, alarms and SMS events
- Dual-server publishing to cloud and on-prem at once
Hardware you can leave in the field for years
We are a manufacturer, not a reseller. We design the boards, write the firmware and own the protocol — so the reliability is built in, and the support comes straight from the people who made it.
About the companyBuilt to run for years
Wide-range 9–36 V supply, DIN-rail builds, hardware watchdog and store-and-forward — engineered to install and forget.
One protocol, sensor to cloud
Modbus RTU/TCP in, MQTT/HTTP out — a single, fully documented protocol family across every model in the range.
Secure by design
SSL/TLS, certificate-based publishing and dual-server redundancy on PRO and MAX keep critical data safe and delivered.
Straight from the makers
We design the boards, write the firmware and own the protocol — so support comes from the engineers who built it, and we customise when you need it.
Built for the industries that run on uptime
The same platform adapts to energy, water, manufacturing, renewables, agriculture and smart infrastructure — just point it at the devices that matter.
Energy & Metering
Sub-metering, power quality and load monitoring across sites.
Learn moreIndustrial & Process
PLC, sensor and machine data for plant-wide visibility.
Learn moreWater & Utilities
Pumps, tanks, flow and quality across distributed networks.
Learn moreRenewable Energy
Solar, inverter and plant telemetry at portfolio scale.
Learn moreAgriculture
Soil, climate and irrigation control from the field.
Learn moreSmart Cities & Buildings
Facilities, environment and infrastructure monitoring.
Learn moreStart with a proven gateway
MAX 4G + LAN Gateway
Dual-network flagship gateway with 4G LTE and wired Ethernet.
PRO 4G Gateway
Secure cellular gateway with SSL, dual servers and battery backup.
LITE 4G Gateway
Cost-effective 4G gateway for everyday remote monitoring.
WT30i Analog Input Card
Compact analog Modbus I/O for reliable voltage-input monitoring.
WE62C Modbus RTU ↔ TCP Converter
Industrial RS485 Modbus RTU to Modbus TCP/IP converter.
Ready to connect your plant?
Tell us what you need to monitor — our engineers will recommend the right gateway and get you a datasheet and quote.