# Incremental Photoelectric Rotary Encoder - 400P/R

**Type:** Product page · **SKU:** SEN0230 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/incremental-photoelectric-rotary-encoder-400p-r.html ([markdown](https://core-electronics.com.au/incremental-photoelectric-rotary-encoder-400p-r.html.md))

This is an industrial incremental photoelectric rotary encoder with aluminum material, metal shell and stainless steel shaft. It generates AB two-phase orthogonal...

## Pricing

- **Price:** $41.30 (inc GST) — $37.55 AUD, exc GST
- **Quantity discounts:** 6+ $35.67 (exc GST) · 12+ $34.16 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

This is a high-quality, optical, rotary encoder with standard quadrature configuration. Each channel is 400 pulse/rev giving a combined maximum of 1600 edge/rev in dual-phase (4x) output. Use it for speed (angular velocity) or relative position measurement.

Outputs are open-collector (NPN), so you can connect them directly with a microcontroller (Arduino, STM32, PLC) with internal pull-up resistors enabled.

![](https://core-electronics.com.au/attachments/localcontent/quad-encoding-waveform_175832ece72.png)

 **Note:** If you want to visualise the output on an oscilloscope, you'll need pull-up resistors on the outputs.

## Specifications

- Supply Voltage: 4.8V ~ 24v
- Encoder Body Size: Φ39× 36.5mm
- Output Shaft Diameter: Φ6 × 13mm
- Outside Shaft Platform: Φ20 × 4.85 mm
- Fixing Holes Screws: M3
- Weight: 234 g
- Max speed: 5000 rpm
 
## **Documents**

- [Product WIKI ](https://www.dfrobot.com/wiki/index.php/Incremental_Photoelectric_Rotary_Encoder_-_400P/R_SKU:_SEN0230)
 
## Shipping List

- Encoder x1
- Encoder mounting bracket x1
- 6mm coupling x1
- Screw accessories x1
- 10K resistors x2

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/6/w/6w4a0532-900x600.jpg)