... capacitive proximity sensor, photo sensor, hall sensor, color mark sensor and analog sensor. 2, Digital meter: temperature controller, digital counter ... , Solid state relay: single phase and 3 phase4, Rotary encoder and couplings5, Various type of cable and connectors..etc. 6, Pressure transmitters. ... !IBEST ELECTRICAL CO.LTDwwwibestchinacom IBEST Solid Shaft Rotary Encoder, Incremental Optical Encoder