Model number: HEC200/220/280, HEC40/45A Product name: Hollow encoder Application: Household appliances, car navigation audio Size/ Dimension: 20/22/28/40/45mm Contact Resistance: 100m�© max Type: Incremental Encoder Rotational torque: 20-440 gf.cm Rated power: 5V DC 0.5mA Rating : DC5V 10mA Insulation resistance: 250V DC- 10M min Life Cycles: 30,000 cycles