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  • New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM
    New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM 1
    New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM 2
    New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM 3
    New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM 4
    New item   -85.37€Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM 5

    Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM

    Code: SIGWM
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  • Product description

    Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM

    The SIGWM is a Sentera Controls internet gateway that connects a single Sentera device, or their whole Modbus RTU network, to the SenteraWeb cloud. The internet connection is made via wireless Wi-Fi only, through an existing router; mounting is on the wall, with 2 screws through Ø3.4 mm holes, protection class IP65.

    Key idea:
    The gateway turns local ventilation automation into a remotely maintained system: settings can be changed from the office, data is logged in the cloud, and you learn about a clogged filter or a motor fault from a notification rather than a customer's phone call.
    Internet connection
    Wi-Fi (WLAN 802.11 b/g/n, 2.4 GHz)
    Modbus
    2 Modbus RTU (RS485) channels
    Power supply
    24 VDC PoM, Imax 35 mA
    Installation / protection
    wall-mounted, IP65

    Operating principle

    The module is wall-mounted with two screws through Ø3.4 mm holes (IP65) and receives 24 VDC power over Modbus (PoM, Imax 35 mA) together with data through the RJ45 socket; it has a 24 VDC output for auxiliary devices. The internet connection is via Wi-Fi only (WLAN 802.11 b/g/n, 2.4 GHz).

    On the master Modbus RTU channel the module polls the connected Sentera controllers, sensors and controllers, while on the second (slave) channel it is itself accessible from the main controller or BMS, so SenteraWeb and the existing automation work together. Data is sent using the MQTT protocol, TCP, UDP and HTTP client modes are supported, the real-time clock has a backup battery, and the firmware is updated over the internet.

    Result – via SenteraWeb the setpoints, limits and parameters of connected devices are changed, firmware updates are installed, data is logged, and alerts (e.g. dirty filter, motor fault) arrive without a site visit.

    Benefits SIGWM?
    One module provides remote access to the entire Sentera Modbus system – fewer service visits, faster fault diagnostics and data history for the customer.

    Technical specifications

    Product type Wi-Fi internet gateway SenteraWeb
    Manufacturer / code Sentera Controls / SIGWM
    Power supply 24 VDC via Modbus (PoM), Imax 35 mA
    Output for auxiliary devices 24 VDC
    Internet connection Wi-Fi (WLAN 802.11 b/g/n, 2.4 GHz)
    Modbus 2 Modbus RTU (RS485) channels: for slave devices and for the master controller / BMS
    Connections RJ45 socket (24 VDC PoM + Modbus RTU), 2 Modbus RTU channels (for slave devices and the main controller / BMS)
    Protocols MQTT; TCP, UDP and HTTP client modes
    Cloud SenteraWeb
    Clock Real-time clock with backup battery
    Update Firmware is updated over the internet
    Reset PROG P1: jumper 1–2 ≥5 s – reset of Modbus communication parameters; 3–4 – update mode; switch: short press – factory Modbus registers, 4 s – Wi-Fi disconnection
    Default IP address 192.168.1.123 (after Wi-Fi reset)
    Installation wall-mounted, 2 screws through Ø3.4 mm holes
    Housing ABS, UL94-V0, grey RAL 7035
    Protection class IP65
    Operating environment -10…+60 °C, 5–95 % rH non-condensing
    Weight 0.198 kg net
    Package package 95 × 85 × 70 mm
    Compliance EMC 2014/30/EU, RED 2014/53/EU (EN 300 328, ETSI EN 301 489-1/-17), EN 60950-1, EN 62311, WEEE, RoHS, EN IEC 63000

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

    Original manufacturer documentation – technical data, wiring diagrams and installation instructions.

    Main functions

    • SenteraWeb access – Configuring and monitoring Sentera devices over the internet.
    • Two Modbus RTU channels – SenteraWeb and the BMS / master controller can work with the same system at the same time.
    • Warnings and notifications – e.g. a clogged filter or a motor fault – the message arrives without a site visit.
    • Data logging – history of measurements and statuses in the SenteraWeb database.
    • Remote update – firmware and parameters of connected devices are updated via SenteraWeb.
    • PoM power supply – 24 VDC and Modbus over a single UTP cable; 24 VDC output for auxiliary devices.
    • MQTT, TCP / UDP / HTTP client – standard internet communication protocols.
    • Real-time clock – with a backup battery – correct data timestamps.
    • IP65 wall-mounted housing – mounted without a panel in a more humid environment.

    Where is it used?

    • Ventilation systems with Sentera speed controllers and sensors that need to be monitored remotely
    • Wall mounting next to the ventilation unit or in a technical room without a control panel
    • Commercial premises, schools, offices – filter and fan status notifications
    • Agricultural buildings, greenhouses, warehouses without permanent staff
    • Sites that already have a BMS but also need SenteraWeb access
    • Service contracts – remote diagnostics and settings changes
    • Barns, greenhouses and other damper premises without a panel

    On-demand operation

    For the livestock farm.
    The IP65 wall-mounted module in a barn passes ventilation data over Wi-Fi.
    For greenhouse automation installers.
    Mounted without a panel in a more humid environment where there is no Ethernet cable.
    For farmers supervising a site remotely.
    Fault notifications arrive via SenteraWeb without a site visit.

    Practical application

    If the ventilation system of a barn with Sentera controllers has to be monitored remotely, and there is no panel or Ethernet cable, then the SIGWM in an IP65 housing is fixed to the wall with two screws, connects over 2.4 GHz Wi-Fi and sends warnings to SenteraWeb, drawing only 35 mA from the PoM line.

    Application guide: how it is used in practice

    The SIGWM always sits between the Sentera Modbus network and the internet – only the connected equipment changes:

    Site What is connected Result Installer's note
    Office, school – ventilation according to CO₂ Sentera CO₂ sensors and speed controllers → Modbus channel for slave devices Ventilation runs on demand; CO₂ history and settings – SenteraWeb A unique Modbus address for each device
    Building with BMS BMS → second Modbus channel; Sentera devices → main channel BMS and SenteraWeb work together without conflicting over the line Match the BMS channel communication parameters to the BMS
    Duct system with filters Sentera differential pressure transmitter via Modbus A notification is received when the filter becomes clogged Set the warning threshold in SenteraWeb
    Greenhouse, warehouse, farm building Sentera temperature / humidity sensors and controllers The microclimate is monitored remotely, with alarms delivered as notifications The Wi-Fi signal at the installation site must be stable
    Upgrading an existing Sentera system The module is plugged into an existing PoM Modbus line The system gets remote access without replacing devices Check the power reserve of the PoM source

    How to choose an internet gateway

    Installation location / internet connection Recommended model
    Panel (DIN rail); Ethernet or Wi-Fi DIG-M-2 (DIN, Ethernet / Wi-Fi, IP20)
    Panel (DIN rail); Wi-Fi only DIGWM (DIN, Wi-Fi, IP30)
    On a wall; Ethernet or Wi-Fi SIG-M-2 (wall-mounted, Ethernet / Wi-Fi, IP54)
    On a wall, more demanding environment; Wi-Fi only SIGWM (wall-mounted, Wi-Fi, IP65) ← this model
    Rule: first decide on the installation location (panel – DIN models DIG-M-2 / DIGWM, wall – SIG-M-2 / SIGWM), then the internet connection: if an Ethernet cable can be run on site – choose a model with Ethernet (DIG-M-2, SIG-M-2); if only Wi-Fi is available – DIGWM or SIGWM. For damp or dusty environments – wall-mounted models with IP54 / IP65.
    When to choose another solution: for local configuration from a computer – CNVT-USB-RS485-V2 / CNVT-USB-RS485-SET; for PoM power and distribution – PDM-8-MB, MDB-M-6, DMDBM22.

    Pros

    • Remote monitoring and configuration via SenteraWeb
    • 2 Modbus RTU channels – BMS compatible
    • Fault and filter notifications
    • Power over Modbus (PoM) – a single UTP cable
    • Clock with backup battery, updated via the internet
    • IP65 enclosure, mounting – wall

    Cons / limitations

    • Wi-Fi (2.4 GHz) only – for wired Ethernet choose SIG-M-2
    • An internet connection is required on site
    • Designed for Sentera devices and the SenteraWeb platform
    • A 24 VDC PoM power supply is required

    Safety and installation notes

    • Installation and connection are to be carried out by a qualified electrician or automation specialist with the power disconnected.
    • Do not exceed the power of the Power over Modbus (PoM) supply – add up the currents of all devices powered on the line.
    • Use in an environment of -10…+60 °C, 5–95 % rH, non-condensing.
    • Use the PROG jumpers and the reset switch only as instructed – they change the communication settings and may break the Wi-Fi connection.

    Quick selection guide

    SenteraWeb
    Wi-Fi
    2×Modbus RTU
    24 VDC PoM
    IP65
    Wall-mounted
    Suitable when you need:
    • to connect Sentera devices to SenteraWeb and monitor them remotely;
    • to receive filter and fault warnings;
    • to integrate SenteraWeb with an existing BMS via the second Modbus channel.
    Check before use:
    • whether the installation site has a stable Wi-Fi (2.4 GHz) signal;
    • whether the PoM power supply has sufficient power reserve;
    • whether all connected devices have unique Modbus addresses.
    Important reminder: The SIGWM is not a speed controller – it only gives the Sentera Modbus system access to the internet and SenteraWeb.

    FAQ

    Can it be used together with a BMS?
    Yes, the module has a second Modbus RTU channel through which the master controller or BMS accesses it.
    How is the module powered?
    The module is powered with 24 VDC over Modbus (PoM) through the same UTP cable that carries the data, and draws up to 35 mA.
    Can fault notifications be received?
    Yes, via SenteraWeb you receive alerts, for example about a dirty filter or a motor fault.
    Is there an Ethernet connection?
    No, this model connects only via Wi-Fi; for wired connection choose DIG-M-2 or SIG-M-2.
    What should I do after changing the Wi-Fi network?
    Hold the reset switch for 4 s to break the existing Wi-Fi connection, and the module returns to the factory IP address for a new connection.
    Where should it be mounted?
    On a wall or structure, fixed with two screws, since the housing is IP65.

    Wi-Fi internet gateway SenteraWeb | Wi-Fi 2.4GHz | 2×Modbus RTU | 24VDC PoM | wall-mounted | IP65 | Sentera Controls | SIGWM

    Sentera SIGWM – Wi-Fi internet gateway connecting Sentera Modbus RTU devices to SenteraWeb: Wi-Fi (WLAN 802.11 b/g/n, 2.4 GHz), 2 Modbus channels, 24 VDC PoM, IP65, wall mounting, remote monitoring and notifications.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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