Hongyan Technology EC11H 7CE20P1ZY15F7 20 Pulse Rotary Encoder with Switch - Vertical Plug-in 5-Pin

This encoder is rated for 5V DC operation. To interface with an Arduino or similar 5V microcontroller, connect the two quadrature output pins (typically A and B) to digital input pins, the common pin to GND, and the switch pin to another digital input (with a pull-up resistor enabled). The 5V logic level is directly compatible, and libraries like the Encoder library can be used to read rotation.

'20 pulse' indicates the encoder generates 20 electrical pulses per full 360-degree mechanical rotation, providing 20 distinct positions. The integrated push-button switch is a separate, momentary contact activated by pressing down on the encoder shaft. It shares the common ground pin but has its own independent signal pin within the 5-pin configuration for separate reading by your controller.

The encoder body requires a 21.5mm diameter round panel cutout. It is secured via a nut onto the front panel, while the 5 pins protrude vertically from the rear for PCB mounting. The total PCB footprint is defined by the 5-pin quincunx pattern. Ensure your PCB layout accommodates this pin spacing and provides clearance for the encoder body.

With its tinplate housing, brass silver-plated pins, wide operating temperature range (-35°C to 85°C), and rated life of 50,000 cycles, it is suitable for light to moderate industrial control panel applications, test equipment, and indoor machinery. For environments with heavy dust, liquids, or extreme vibration, an encoder with a specific IP rating and sealed bearings would be recommended.