Refoss Open API Smart Energy Monitor (EM16P) for $136 with Promo Code at Refoss
A Slickdeals community post reports the Refoss Open API Smart Energy Monitor (EM16P) is listed on sale for $159.99 and drops to $136 before applicable taxes when applying promo code WELCOME15 at checkout, with free shipping reported by the poster. According to the source description, the ETL-certified system monitors up to 18 circuits with a stated ±2% error margin and supports Open API integration. While the poster notes no sales tax was charged to Minnesota, tax treatment for other states, new-customer restrictions on the welcome code, stock availability, and warranty terms remain unknown.




