S1 and S2 on Sonoff Mini R2 not working when connected to a switch

Sonoff Mini dual switch support

MINIR4: it is forbidden to connect - Free discussion - eWeLink Forum

smart switch - Sonoff Mini with Home Accessory Architect firmware - Home Improvement Stack Exchange

What are new trigger modes for MINI's external switch?- Edge Mode - SONOFF Official

【 APP Remote Control 】eWeLink APP enables you to control all SONOFF devices anywhere with one tap via iOS & Android smart phone, no distance

SONOFF Mini R2 10A Smart WiFi Wireless Light Switch, Universal DIY Module for Smart Home Automation Solution, Works with Alexa & Google Home

What is the Two Way Control in Sonoff Mini - All about Automation: Home Assistant Node Red Docker API much more

What are new trigger modes for MINI's external switch?- Pulse Mode - SONOFF Official

SONOFF MINIR4M - A Matter-compatible WiFi Smart Switch - CNX Software

Tasmota Module Parameters for Sonoff Mini - Hardware - Home Assistant Community