# ODrive Encoder OA1 On-Axis Magnetic Encoder, RS485

![ODrive Encoder OA1 On-Axis Magnetic Encoder, RS485](https://parts.trymaglev.com/img/ac-odrive-enc-oa1.webp)

Cased on-axis magnetic encoder (MA702) with RS-485 and thermistor pass-through for ODrive Pro/S1, for long or noisy cable runs.

- Maglev ID: ac-odrive-enc-oa1
- Brand: ODrive Robotics
- MPN: ENC-OA1
- Category: actuators / Magnetic Encoders
- Origin: US (maker HQ, factory not confirmed)
- Maker: ODrive Robotics (brand, US)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 9031.80.80.85 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: $39 (list, 2026-10-30, https://shop.odriverobotics.com/products/odrive-rs485-magnetic-encoder)
- 100+: $34 (list, 2026-10-30, https://shop.odriverobotics.com/products/odrive-rs485-magnetic-encoder)

## Specifications
- Resolution: 12-bit (MA702 sensor)
- Accuracy: unknown for the module; MA702 IC datasheet INL 0.7° at 25 °C, 1.1° over temperature
- Max speed: 60,000 rpm
- Interface: RS-485, 2 Mbps (ODrive OA1 protocol; also thermistor input passed over the same cable)
- Form: on-axis module (MA702 PCB in case, Molex CLIK-Mate 6-pos; needs diametric magnet, one included)
- Sensing: unknown
- Supply: 4.5-5.5 V, supplied from ODrive
- Bore: n/a
- Operating temp: specs given for 0-40 °C ambient; IP20 with case

## Links
- Product: https://shop.odriverobotics.com/products/odrive-rs485-magnetic-encoder
- Datasheet: none
- CAD: none

## Equivalents
- Same Sky (CUI) AMT21 Absolute Modular Encoder (RS-485) (ac-samesky-amt21)

## Works with
- ODrive Pro High-Power BLDC Controller (mo-odrive-pro)
- ODrive S1 Single-Axis BLDC Controller (mo-odrive-s1)

## Sources
- https://shop.odriverobotics.com/products/odrive-rs485-magnetic-encoder (specs, quantity pricing, stock)
- https://docs.odriverobotics.com/v/latest/hardware/oa1-datasheet.html (OA1 datasheet: 4.5-5.5 V, RS485 2 Mbps, 12-bit MA702, 60,000 rpm, 6.3 g with case, IP20, magnet spacing)
- https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MA702GQ-Z/document_id/3561/ (MA702 IC datasheet: INL)