... Open conllector. 2011---RJ series Rotary Encoder,Shaft Encoder,Incremental Encoder Features: 1,Photo-electric rotary encoder is a digit sensor integrated ... Z)open collector output,contact output;As to absolute encoder. 4--20mA,RS485,can directly connect to ... Meter Flow / Level /Pressure Controller Proximity/ Photoelectrical Switch Timer,Timer Relay Sensor Controller Signal adjustorThey are widely used ...