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    FortrezZ FMI Flow Meter (FZFMINLCxR10P) — Technical User Manual

    September 08, 2026 4 min read

    Technical user manual for the FortrezZ FMI Flow Meter — a Z-Wave Plus enabled water flow meter with leak/high-flow alerts, temperature monitoring, and full Z-Wave configuration reference.

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    Technical user manual for the FortrezZ FMI Flow Meter (FZ-FMINLC-x-R10P) — a Z-Wave Plus enabled water flow meter that detects, measures, and monitors water utility usage and sends alerts over your Z-Wave network.

    Overview

    Flow Meter is a Z-Wave Plus enabled device that measures water flow, detects leaks/high-flow events, and monitors temperature. It is compatible with other Z-Wave and Z-Wave Plus certified products.

    Specifications — FMI Module (Z-Wave Plus device)

    Spec Value
    Power 5 volts (nominal) DC from regulated power supply @ ~500mA, with optional AA alkaline battery (2) backup
    Battery life (without AC mains) ~40 hours (depending on battery quality, no alarms, default Z-Wave network settings)
    Frequency range 908.4 MHz (US); 868.4 MHz (EU)
    Distance range Max 100 ft line of sight, unobstructed
    Enclosure size (LxWxD) 3" (76mm) x 2.1" (53mm) x 1.1" (30mm)
    Weight 0.25 lb (110 g)
    Operating temperature -10°C (14°F) to +70°C (158°F)

    Specifications — Flow Meter Body

    Spec Value
    Maximum pressure 150 psi
    Maximum temperature 122°F
    Accuracy Normal flow: ±1.5% / Low flow: ±3%
    Minimum flow rate 0.25 GPM (3/4") / 0.75 GPM (1")
    Maximum flow rate 20 GPM (3/4") / 50 GPM (1")
    Materials Body & coupling: EcoBrass; Internals: engineered thermoplastic; Magnet: Alnico
    Pulse rate 10 pulses / gallon
    Weight 3/4": 4.25 lbs. / 1": 6.5 lbs.

    Warnings & Precautions

    • Do not store highly flammable items (oily rags, other combustibles) near the FMI.
    • Do not apply electrical power to the unit unless fully assembled, to avoid shock.
    • Install in accordance with electrical & plumbing codes; consult a licensed electrician, plumber, and/or Z-Wave home automation specialist if unsure.
    • Functionality depends on RF transmissions and may be subject to interference or loss of communication.
    • The FMI must not be used in life support and/or safety applications.
    • Do not place the FMI on or near large metal objects — this decreases range and/or blocks wireless transmissions.
    • It is against the law to remove or tamper with an existing city meter.
    • Do not abruptly open the water supply after meter installation — sudden pressure may damage the meter.

    Using the Flow Meter in a Z-Wave Network

    Inclusion / Exclusion

    • Inclusion: Set up inclusion mode at the controller, then press the switch once. The controller will confirm inclusion and the LED will blink when complete.
    • Exclusion: Set up exclusion mode at the controller, then briefly press and release the switch. The LED will blink when exclusion completes.

    The FMI supports four association groups (including the controller Lifeline) with a maximum of 5 devices per group.

    Status Indications (LED)

    Fast Blinks Slow Blinks Periodic? Description
    1 — No Button has been pressed
    — 1 Yes Network-Wide Inclusion (NWI) mode (auto-entered at power-up when not in-network)
    2 — No FMI is 'in-network' (after inclusion / power-up)
    — 2 No Main power (+5V adapter) has dropped out
    4 — Yes FMI is 'out-of-network'
    — 3 No Waiting for Over-The-Air firmware update
    30 (approx.) — No Device reset completed

    Alarms & Low Power / Battery

    If flow is detected, or an over/under-temperature or power-low condition is detected, the unit sends an alert message to the Z-Wave network. If associations are configured, Basic Set messages are sent for water flow. If Heat or Power Alarms are configured (via the Notification Command Class), the FMI sends alert messages to the Lifeline group (Association Group 1). If an over/under-temperature alarm clears, an "alarm clear" message is also sent.

    The FMI sends an "AC Mains Disconnected" alert on low-power conditions. Two AA batteries can be installed for backup during power loss; do not rely on them for more than 40 hours. New batteries should be installed (while keeping the device powered on the main adapter) after lengthy outages, or on low-battery indication.

    Configuration via Z-Wave

    Param Description Default Possible Values
    1 Temperature low threshold 4°C -10°C thru 69°C
    2 Temperature high threshold 70°C -9°C thru 70°C
    3 Meter count (tenths of gallons) — resettable to 0 0 0 – 99,999,999 (rolls over)
    4 Meter report interval while flowing (0 = no continuous reporting; report still sent every 10 hrs regardless) 6 (60 sec) 0 to 255
    5 Meter leak threshold (flow vs. high flow) 50 (5 gallons) 0 to 65535
    6 Notification vs. Multi-Level Sensor toggle 0 (Notification) 0 = Notification, non-zero = MLS

    The Water Flow default threshold is 5 gallons/minute — flow above this displays "High flow"; this can be reconfigured via parameter 5.

    Associations

    Group Max per Group Function
    1 (Lifeline) 5 Device Reset Locally, Multilevel Sensor Temperature Report, Meter Pulse Report, Notifications (under/over-temperature, power droop)
    2 5 Basic Set (0xFF) sent when Temperature High detected; 0x00 sent when back to normal
    3 5 Basic Set (0xFF) sent when Temperature Low detected; 0x00 sent when back to normal
    4 5 Basic Set (0xFF) sent every 30 seconds while water is flowing (e.g. to command a valve closed or activate a siren) — useful for vacant properties; remove associations if flow is normally expected

    Reset & Firmware Update

    • Factory Reset: Press and hold the program button for 15+ seconds, then release. Can be done in or out of network (not during NWI mode). Resets all configurations and associations to default.
    • Enter OTA Firmware Update Mode: Quickly press the program button three times while in-network. Do not leave OTA mode active indefinitely without starting the update — this increases the risk of the unit being hacked. Press the button once to exit OTA mode.

    Contact

    FortrezZ, LLC — 1080 Centre Rd, Ste C, Auburn Hills, MI 48326. Phone: (248) 481-7092. Sales: sales@fortrezz.com. Support/Warranty: support@fortrezz.com. Web: www.fortrezz.com