The rotary encoder has switch function. Action Type: latching; Function: ON-OFF;one Speed;Rating: 1(1)A/250VAC Material: Flame retardant PC shell material, high temperature resistance, silver contact, Good conductivity and oxidation resistance Sensitive response, stable performance, long service life. Simple structure, easy to install and use. Widely used in automotive electronics, multimedia audio, instrumentation, household appliances, smart home, medical equipment, etc.