This of one three BG listings for this excellent DIN-mounted power-measuring switch. As supplied it works with Tuya, but switches shipped in 2020 were quite easy to flash with Tasmota. All those I've received in 2021 so far use a WB3S Tuya module which is not ESP-8266 and hence not Tasmotisable unless you're willing to desolder the WB3S and replace it with an ESP-12. That works, but requires a bunch of time and some extra cost for the ESP-12. Currently the DDS-238-2WiFi offers a good alternative if you want a similar and cheaper switch you can easily flash with your own firmware.

This of one three BG listings for this excellent DIN-mounted power-measuring switch. As supplied it works with Tuya, but switches shipped in 2020 were quite easy to flash with Tasmota. All those I've received in 2021 so far use a WB3S Tuya module which is not ESP-8266 and hence not Tasmotisable unless you're willing to desolder the WB3S and replace it with an ESP-12. That works, but requires a bunch of time and some extra cost for the ESP-12. Currently the DDS-238-2WiFi offers a good alternative if you want a similar and cheaper switch you can easily flash with your own firmware.

This of one three BG listings for this excellent DIN-mounted power-measuring switch. As supplied it works with Tuya, but switches shipped in 2020 were quite easy to flash with Tasmota. All those I've received in 2021 so far use a WB3S Tuya module which is not ESP-8266 and hence not Tasmotisable unless you're willing to desolder the WB3S and replace it with an ESP-12. That works, but requires a bunch of time and some extra cost for the ESP-12. Currently the DDS-238-2WiFi offers a good alternative if you want a similar and cheaper switch you can easily flash with your own firmware.