SPM-Main Smart WiFi Ethernet Power Meter Switch

Product code: 1017021
Sonoff SPM-Main Smart Switch, which enables power consumption measurement. The device is the main component of a system consisting of the SPM-Main and SPM-4Relay.
The device supports wired (RJ45 Ethernet port) and wireless Wi-Fi connectivity. The product is highly versatile—it supports up to 128 channels. To achieve this, connect it to the SPM-4Relay switch (max. 32 units).
The SPM-Main is equipped with overload protection to prevent damage to your devices. In addition, thanks to the built-in microSD card reader, you can save energy usage history for up to 180 days
The microSD card and SPM-4Relay are not included in the set—they can be purchased separately.
Specifications:

• Manufacturer: Sonoff
• Model: SPM-Main
• Color: White
• Input: 100-240 V ~50/60 Hz 50 mA max.
• Wi-Fi: 802.11 b/g/n 2.4 GHz
• Material: PC V0
• Dimensions: 142.5 x 90 x 66.5 mm
• Compatible microSD cards: 8-32 GB (microSDHC)