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With this smart stackable wifi power meter from Sonoff, you can maintain and monitor up to 128 relays from just one app. when used with SPM-4Relay*. A total of 32 SPM-4Relay (each with 4 relays) can be connected to a single SPM-Main. Each relay unit supports up to 80A (20A pr. relay) and lets you check voltage, current and power draw, making it an ideal solution for complete overview of larger operations (such as apartment complexes, malls and server rooms).
The unit is complete with overload protection and app. control. Furthermore, a complete energy usage of up to 180 days can be extracted from the device using an SD-card (not included, see accessories). This way you can look back and optimize on the power usage.
*SPM-4Relay is not included and must be purchased separately (see accessories). At least 1 SPM-4Relay is required. A total of 32 SPM-4Relay units can be connected to a single SPM-Main - SPM-Main does not work as a standalone unit.
Features:
- Connect up to 32 SPM-4Relay: One SPM-Main can be connected with up to 32 SPM-4Relay. Each SPM-4Relay has 4 isolated channels, adding a total of up to 128 channels to monitor.
- Power metering: You can monitor the power consumption using the eWeLink app. on your smartphone. You can check voltage, current and power draw. Furthermore, a complete energy usage of up to 180 days can be extracted from the device using an SD-card (not included, see accessories). This way you can look back and optimize on the power usage
- Communicated by RS-485: The SPM-Main communicates with the SPM-4Relay through RS-485, which allows for multi-terminal and stable long-distance data transmission
Specifications:
- Model: SPM-Main
- Input: 100-240V~ 50/60Hz 50mA
- WiFi protocol: 802.11 b/g/n 2.4GHz
- Micro SD storage: 8-32GB SDHC (see accessories)
- Color: White
- Material: PC V0
- Dimension: 142.5 x 90 x 66.5mm
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