NM4-I NextMeter Indoor FAQ
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Last updated: June 2025
The NM4-I is an indoor ultrasonic meter with NextCentury Connect™ Wireless technology. It combines cutting-edge ultrasonic technology with AMR (Automatic Meter Reading) capabilities.
Key benefits
- Designed for indoor submetering.
- 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.
The Next Meter has the following:
- FCC ID: 2A8EC-NM4I | IC: 28950-NM4I
- NSF/ANSI 61
- NTEP/CTEP Approval 23-055A1
- Conforms to AWWA C715-18 & UL 2043
Here are some tips for installing the NM4-I
- Indoor installation only
- Up to 90% non-condensing humidity
- Horizontal or vertical installation
- Register facing in any position best for reading
- 7.5” pipe straight before the meter
For the full installation process, follow the guide here: NM4-I NextMeter Indoor Installation
The NM4-I offers two versatile output options. It utilizes built-in NextCentury Connect™ wireless technology for seamless communication with our cloud-based data management software, ensuring real-time data transmission. Additionally, there's a wired pulse output available for users who prefer or require a wired connection. These options provide flexibility to suit your specific monitoring needs.
The battery used, a field-replaceable CR18505 lithium battery, has a typical longevity of 10 years
For information on purchasing replacement batteries for the NM4-I meter, please contact your product supplier or get in touch with our dedicated Support Team:
- Support Hotline: (844) 538-8203
- Email: support@nextmeters.com
The NM4-I is engineered to perform beyond standard requirements and can endure pressures far above standard water supply specifications. It has been tested to endure over 100,000 pressure cycles.
Yes, the NM4-I meter undergoes NSF testing to ensure its quality and safety in compliance with NSF standards.
To learn about the manufacturing process, check out the video below. For additional information about quality assurance, read our white paper about the QA process.