We have been producing coding potentiometers for automotive electronics since 2003. EC11 series encoders, also known as encoding potentiometers or encoding switches. It is a mechanical regulator widely used in automotive electronic systems such as car audio and navigation, household appliances such as air fryers, induction cookers, electric fryers, and various electrical equipment. It is used for volume adjustment, intensity adjustment, menu selection, etc.

　　Hollow shaft encoders

　　The EC21/EC22/EC28/EC35 series high-precision rotary encoder has a long service life and high reliability, and is used for car audio, car navigation, air conditioning control, home appliance control, household speakers, etc.

　　The hollow encoder can rotate 360 degrees, with a torque of 20-150gf.cm. The maximum contact resistance of the switch is 100m Ω. The fixed grid power of the switch is 5V DC 10mA, with a maximum operating voltage of 12V and a withstand voltage of 300V AC for 1 minute.

　　Output signal: 15 pulses for 30 positions, 10 pulses for 30 positions.

　　Cold resistance: -40 ℃ for 240 hours, humidity resistance: 60 ℃ for 90-95RH for 240 hours, usage temperature: -40 →+85 ℃, storage temperature: -40 →+85 ℃. The rotational lifespan is 50000 times. Manual welding at 260-280 ℃ for 3 seconds. Wave soldering/reflow soldering: 240-260 ℃ for 5S.

　　EC21 outer diameter D=23.6mm, inner diameter d=10.4mm, height h=9mm, 15mm.

　　EC22 has an outer diameter of D=20.45mm, an inner diameter of d=9.4mm, and a height of h=9.5mm.

　　EC28 has an outer diameter of D=28.9mm, an inner diameter of d=20.4mm, and a height of h=15mm.

　　EC35 outer diameter D=36.5mm, inner diameter d=23.4mm, height h=15mm, 20mm, 25mm.