Pick a prepaid or sub-metering solution that fits your space, budget, and billing needs. This guide highlights five reliable options ideal for landlords, small businesses, RV setups, and off-grid or hybrid solar users. Each product is evaluated for who it’s best for, with practical notes on installation, data visibility, and potential limitations. Use this overview to compare ease of installation, data access, and scalability when choosing a meter for sub-metering or energy monitoring.
Summary table of selected products
| Product | Brand | Best For | |
|---|---|---|---|
| Digital Electric Sub Meters for Landlords | Aituzero | Rental units, workshops, RV pads | Sub-metering with Modbus, LED indicators |
| Upgraded Watt Meter Power Meter Plug | MECHEER | Home energy monitoring, DIY users | 7 display modes, backlit LCD |
| DROK AC Meter | DROK | General electrical testing, small projects | 6-in-1 measurements on one interface |
| Electric Meter, KWh Meter, DIN Rail | Walfront | Industrial or panel-mased setups | DIN-rail mounting, LED indicators |
| Poniie PN2000 Plug-in Meter | Poniie | Portable energy tracking, single outlets | High accuracy, memory and backlight |
Digital Electric Sub Meters for Landlords
This single-phase, 120/240V, 3-wire sub-meter is designed for easy installation in standard 2S form bases. It’s ideal for RVs, garages, and rental units where fair billing across tenants or circuits matters. The device supports sub-metering with Pulse output and Modbus communication, and it retains data during power outages via EEPROM memory. Best for landlords and small facilities that require clear kWh measurements and simple integration with a sub-panel.
Best for: landlords or property managers needing reliable, readable energy data for separate tenants or circuits. Why selected: it combines straightforward wiring with digital accuracy and system integration options. Limitation: data installation is more suitable for fixed sub-panels rather than stand-alone portable setups.
Upgraded Watt Meter Power Meter Plug
This plug-in energy monitor provides real-time data on power, energy, volts, amps, and more, with seven display modes and a backlit screen. It’s best for estimating usage on individual appliances and tracking costs over time. It’s particularly useful for DIY energy budgeting and identifying high-consumption devices. Best for: homeowners or renters who want quick, precise readings on a single outlet or device. Caution: it measures at the outlet level and may not reflect whole-home energy patterns.
DROK AC Meter
This 6-in-1 meter measures voltage, current, active power, energy, frequency, and power factor in one device. Its compact display makes it ideal for testing and quick checks in home studios, workshops, or RV setups. Best for: those who need a compact, all-in-one diagnostic tool. Caution: while feature-rich, it is a meter-style reader rather than a full sub-metering solution for multi-tenant billing.
Electric Meter, KWh Meter, DIN-Rail
Designed for DIN-rail mounting, this 4P LED DIN-rail meter suits panel installations in electrical closets or controlled enclosures. It features a 5+1 LED display and a simple connection scheme compatible with many AMR systems. Best for: installers needing a compact, panel-ready meter for industrial or building-wide energy management. Caution: ensure DIN-rail compatibility with your existing panel layout.
ANENG Digital Multimeter with Non Contact Voltage Tester
This pocket-sized multimeter combines voltage, current, resistance, and diode testing with a non-contact voltage tester and a built-in flashlight. It’s best for quick field checks, electrical troubleshooting, and automotive tasks. Best for: technicians and DIYers who need a compact, versatile tester. Limitation: not a dedicated sub-metering device for tenant billing, but it complements energy work and diagnostics.
Poniie PN2000 Plug-in Kilowatt Monitor
The PN2000 watt meter counts energy in kilowatt-hours with a high accuracy, designed for 16A max, and supports 220V AC. It features a backlit display and a memory function for cumulative energy readings. Best for: users who want reliable, portable energy tracking for individual appliances or devices. Caution: higher current devices may exceed the 16A rating, so monitor load carefully.
LM YN Digital AC Voltmeter and Frequency Meter
This two-in-one meter measures AC voltage and frequency with a 1% accuracy and a simple two-wire design. It’s suitable for quick checks of input power quality in residential and office environments. Best for: users who need straightforward voltage and frequency data without extra sensors. Limitation: does not provide full energy consumption or power factor data on a single device.
Digital Electric Meter for RV and Home
This 120V, 2-wire meter uses CL200 energy measurement standards for RVs and residential usage. It emphasizes high-definition display and precision, aiming to support electricity monitoring in homes, RVs, and similar settings. Best for: consumers needing a reliable, ANSI-aligned metering option for smaller-scale environments. Caution: designed primarily for limited voltage and amperage ranges; ensure it matches your system’s specifications.
Buying Guide
- Purpose: Choose between sub-metering for multi-tenant billing and general energy monitoring for individual devices or small installations.
- Installation: Look for DIN-rail mounting, standard socket compatibility, or plug-in adapters depending on your panel setup and space.
- Data access: Consider meters with Modbus/Pulse outputs for integration into larger energy management systems or billing platforms.
- Display: Backlit LCDs and large digits improve readability in low-light spaces or behind panels.
- Electrical ratings: Ensure voltage, current range, and phase compatibility align with your electrical system (single-phase vs. 3-phase, 120/240V, etc.).
- Durability and reliability: Solid-state designs with data retention during outages help maintain accurate billing and monitoring records.
- Safety and compatibility: Some meters are best suited for DIY projects; others are intended for professional installations and require electrical know-how.
Frequently Asked Questions
- What is a sub-meter used for in rental properties?
– It measures energy usage per tenant or circuit to ensure fair billing and track consumption for each unit. - Can I install a prepaid meter myself?
– Some plug-in or 2S-socket meters are DIY-friendly, but ensure you follow local electrical codes and safety precautions. - What data outputs should I look for?
– Pulse output and Modbus are common for integrating with larger energy management systems or billing software. - How do I choose between a DIN-rail meter and a plug-in meter?
– DIN-rail meters suit panel installations, while plug-in meters are convenient for single outlets or temporary setups. - Are these meters suitable for solar setups?
– Some meters provide real-time power flow and export/import monitoring, which helps balance loads and assess panel performance.