Vcc - 3,3V
TX - RX
RX - TX
GND - GND
For flashing you need to connect GPIO0 to GND
- ESP8266 - on TYWE2S Module
- HLW8012 - Power Monitor Chip
- SRU 5VDC SDA - Relais
You need to solder a wire to the test-point on the TYWE2S Module to be able to enter the flashmode. The Resest Pin has no function for that purpose.
Power Monitoring will not work with that configuration... wait for software update in case you want to use it
UPDATE: with Tasmota 6.3.0 you have fully monitoring support (Add support for CSL Aplic WDP 303075 Power Socket with Energy Monitoring (#3991, #3996))