Hongyan Technology EC11H 7CE20P1ZD20 20 Pulse Rotary Encoder with Switch - 5-Pin Vertical Plug-in

The EC11H encoder provides a mechanical quadrature output. It generates two square wave signals (Channel A and B) that are 90 degrees out of phase. By monitoring the phase relationship between these signals, a microcontroller can determine both the direction of rotation and the number of steps (20 pulses per full revolution). The separate push-button provides a momentary contact closure on a dedicated switch pin.

The 5 pins are typically arranged as: two pins for the quadrature outputs (A and B), one common pin for both the encoder and switch, one pin for the switch output, and one pin for the encoder's second channel. The common pin is usually connected to ground, while the A, B, and switch output pins are connected to microcontroller digital inputs, often with pull-up resistors. Always consult the specific datasheet for the EC11H 7CE20P1ZD20 for the exact pinout diagram.

This encoder is rated for 5V DC operation with a maximum current rating of 10 mA per contact. It is designed for direct interface with 5V logic microcontrollers like many Arduino boards. Ensure your circuit design, including any pull-up resistors, does not exceed this current rating on any pin to ensure longevity and reliable operation over its 50,000-cycle lifespan.

The standard version offers basic protection, but the product listing indicates customizable ingress protection (IP) is available. For applications requiring dustproof or waterproof sealing, you must specify this requirement at the time of order. The wide operating temperature range of -35°C to +85°C makes it suitable for challenging environments, but the level of sealing against particulates and liquids depends on the customized IP rating.