AMT21 Series

AMT21 Series
AMT21-V Kit

AMT21 Series

28 mm, 12 or 14 Bit, Single-Turn or Multi-Turn, Absolute, RS-485 Interface, Capacitive Modular Encoder

CUI Devices' AMT21 series is a rugged, high accuracy absolute encoder outputting 12 bits or 14 bits of absolute position information with RS-485 communication and single-turn or multi-turn output options. Thanks to its innovative capacitive platform, the series is not susceptible to contaminants such as dirt, dust, and oil that typically plague encoders in industrial environments. The AMT21’s design also simplifies the assembly process, reducing the time-consuming tasks of mounting and alignment to mere seconds with the One Touch Zero™ feature. Combined with an operating temperature range of -40°C to +105°C, high accuracy, a compact package, and low current draw, the AMT21 provides a compelling solution for a range of industrial, automation, robotics, and renewable energy applications.


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Over 15 encoders in one kit. A flexible platform for development and prototyping, available in distribution for immediate delivery.



12-bit absolute (4096) position or 14-bit absolute (16384) position
RS-485 communication
Single-turn or multi-turn output options
Resilient to dirt and dust
Low current draw
Modular locking hub design for simple assembly
One Touch Zero™ set
Compatible with AMT Viewpoint™ GUI
-40 to +105°C temperature range


Type Description
Input Voltage (Vdc) 3.8 ~ 5.5
Operating Temp. (°C) -40 ~ 105
Speed, Max. (RPM) 4000, 8000

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