Quantity   Component name
1 × Pro Mini 3.3v 8Mhz
1 × PCF8563 real time clock
1 × 433MHz (for in UK) RF https://www.aliexpress.com/item/32728352611.html?spm=a2g0s.9042311.0.0.27424c4dCiYRfL
2 × Schottky diodes
1 × Current transformer. Mine is from a commercial unit but like SCT-013-000 YHDC on Aliexpress. Connectors and Accessories / D-Subminiature Connectors
1 × 0.1 5.5v supercapacitor
2 × 100uF capacitor
1 × Zener 5.1v to protect Super Capacitor. Electronic Components / Misc. Electronic Components