Analog Linear Optical Coupling: Analog Linear Optical Coupling is photoelectric component by inputting the different current to control the changes of resistance. It makes use of CdS and LED semi-conductor with rigorous selection, aging and test. The product is widely used by current input control and pure resistance with non-polarity output.Our company own the patent of manufacturing and the patent number is ZL02225334.3. Characteristics: Pure resistor and non-polarity output . Wide range of analog linear resistance, the low ¡°on¡± resistance, high ¡°off¡± resistance. Simple circuit configuration suitable for DC and AC use. Input to output isolation, and low distortion coupling. Encapsulation with PPO high-temperature resistant material. Acoustic protect and control. Volume control and electric isolation coupling. Light adjust and motor speed control. Communication transmission and automatic control. Input Figure and Dimensions: LCR-0203 Dimensions Cylindric Diameter 6.0mm Cylindric Long 13.5mm Output Lead Length 27.5mm Input Lead Length 25.0mm Lead Diameter 0.45mm Lead Gap 2.8mm Input Polarity Sign¨’ LED anode-lead Ektexine Material PVC Optional Information - Payment : TT, Western Union - Delivery : 3 working days - Origin : China - Minimum Order : 1000pcs. 100pcs for a small box.