Product Description
The ultrasonic NextMeter Indoor integrates sophisticated solid-state measuring technology with the Next Century wireless sub-metering platform. It is the first solid-state meter specifically designed for the water sub-metering industry.
Built-in Transceiver! (Transceiver will not function alone. You would need to purchase the Next Century Gateway Lite (for under 50 water meters))
The NextMeter combines cutting-edge ultrasonic technology with the wireless communication capability to integrate into a new or existing Next Century AMR solution. This is packaged into a simple and easy-to-use water meter designed for effortless deployment. NextMeter ultrasonic technology reliably detects even the smallest amount of flow and extends this level of accuracy across all flow rates.
With the best metering and wireless components combined into a single device, the NextMeter greatly reduces both installation and programming time.
Key benefits
- Model is designed for indoor use (outdoor version expected end of 2026 and a 1" in 2027)
- Accuracy that doesn't degrade over time.
- Open flow-tube design reducing head loss.
- Simplified installation with an all-in-one meter and transceiver.
- Compatible with the NextCentury wireless platform for real-time data and alerting.
- Fully electronic with no moving parts that wear out.
LCD Register Display
- Displays 10 digits of total volume
- Gallons (other units planned for future. Contact for details: cubic feet, liters, or cubic meters)
- Flow indication wheel and current flow rate
- Alert indicators – backflow, dry, low battery, leak
Approvals
- FCC: 2A8EC-NM4I | IC: 28950-NM4I
- NTEP/CTEP: 23-055
- Conforms to AWWA C715-18 & UL 2043
Wireless Communication
- Built-in NextCentury Connect™ 902-928 MHz
- Compatible with all NextCentury Gateways and Repeaters
Installation
- Horizontal or vertical
- Register facing in any position best for reading
- Cold or hot water metering applications
- Simple mobile app programming
- Requires 7.5 inches straight pipe before the meter
- Check Valve recommended (Isolation valve also makes future maintenance simpler)
Battery
- Typical 10+ year battery life
- Preinstalled, field-replaceable CR18505 battery

Sizes and Flow Rates
| Meter | Size | Length | Max. Flow |
| NMI-4-075 | 5/8" x 3/4" | 7 1/2" | 25 |
| NMI-4-7575 | 3/4" x 3/4" | 7 1/2" | 30 |
| NMI-4-100 | 3/4" Full | 9" (w/ext) | 30 |
Operation Environment
- Water temperatures up to 180°F (82°C)
Wired Pulse Output
- Pulse output with accessory cable
- 1 pulse per 10 units of measure
- Ideal for remote meter display requirements
- Digital Display Only
- Digital Display with Transceiver
Accuracy
Documentation
Meter Out Cable Quick Start Guide
