FranklinWH MAC Specifications
| Model | MAC |
| SKU | MAC-R1V1-US |
| Rated AC Input Voltage | 208 Vac, 240 Vac |
| Operating AC Voltage Range | 183–228 Vac, 211–264 Vac |
| Rated DC Input Voltage | 12 Vdc, 24 Vdc |
| Operating DC Voltage Range | 10–16 Vdc, 20–28 Vdc |
| Rated Frequency | 60 Hz |
| Rated Power Consumption | 7 W |
| Communications | CAN/RS485/Ethernet/WiFi/4G/Bluetooth |
| Dimensions (W x H x D) | 8.4 in × 11.7 in × 3.3 in |
| Weight | 3.3 lbs (1.5 kg) |
| Enclosure Type | TYPE 3R |
| Operating Temperature | -20°C to 50°C (-4°F to 122°F) |
| Operating Humidity | Up to 100% RH, condensing |
| Mounting | Wall mount (¾ in conduit compatibility) |
| Environment Rating | Indoor/Outdoor |
| Warranty | 15 Years |
FranklinWH Meter Adapter Controller (MAC)
SKU FRANKLINWH-MAC
The FranklinWH Meter Adapter Controller (MAC) provides streamlined energy storage integration for homes with combo-style electrical panels. This compact controller eliminates the need for costly panel modifications by directly integrating with the electrical meter, reducing installation time from 4 hours to 20 minutes. The MAC manages third-party meter socket adapters to control grid relay switching and meter home energy consumption while providing automatic backup power transition during outages.
Engineered for professional installers working with North American combo panels, the MAC features comprehensive communications protocols including CAN, RS485, Ethernet, WiFi, 4G, and Bluetooth connectivity.
FranklinWH Meter Adapter Controller Features
- Dramatic Installation Time Reduction: Complete system integration in 20 minutes compared to 4-hour traditional panel modifications, minimizing labor costs and homeowner disruption
- Substantial Cost Savings: Eliminates panel rewiring and new panel installation expenses, saving up to several thousand dollars per installation while maintaining full functionality
- Seamless Backup Transition: Automatically switches to aPower battery backup during outages, ensuring uninterrupted power supply with intelligent energy management
- Space-Efficient Design: Compact 3.3 lb unit installs easily without space constraints, ideal for installations where panel room is limited or unavailable
- Extended Reliability: 15-year warranty backed by rigorous UL 1741, UL 3741, IEEE 1547 certifications demonstrates exceptional build quality and long-term performance
MAC System Compatibility & Requirements
The Meter Adapter Controller is designed specifically for homes with meter-main combo panels and integrates seamlessly with FranklinWH energy storage systems.
Compatible FranklinWH Battery Systems:
- aPower Series: Works with all FranklinWH aPower battery models for whole-home backup and energy management
- Scalable Storage: Supports single or multiple battery configurations based on home energy requirements

Electrical Panel Requirements:
- Combo Panel Configuration: Designed specifically for meter-main combo style electrical panels common in North American residential installations
- Service Capacity: Approved for use with main service panels up to 200 amperes
- Voltage Compatibility: Supports 208V and 240V split-phase residential electrical systems

FranklinWH Meter Adapter Controller Technical Review
This Meter Adapter Controller addresses a significant installation challenge in North American residential energy storage: combo-style electrical panels that traditionally require extensive and costly modifications. By interfacing directly with meter socket adapters, the MAC-10 manages grid relay control and energy metering without panel overhauls. This non-intrusive integration method reduces installation time by 92% while eliminating several thousand dollars in panel upgrade costs. The unit's dual-voltage capability (208/240 VAC and 12/24 VDC) with wide operating ranges provides compatibility with diverse electrical configurations, while minimal 7W power consumption ensures negligible parasitic losses.
TYPE 3R enclosure rating with -20°C to 50°C operating range and 100% RH condensing humidity tolerance ensures reliable outdoor installation in harsh weather conditions. Certification to UL 1741, UL 3741, and IEEE 1547 standards confirms grid interconnection safety and compliance, while the 15-year warranty reflects engineering confidence in long-term reliability.
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