- We at BTI are proud that the Monarch 21 system carries the approval of the FDA as a regulated medical device. Click here to find out what this means for you.
- We at BTI are always happy to address any questions about our products. Call us at 801-363-9017 for assistance.
- View our brochure in pdf format
The Monarch 21 System
MONARCH 21 by BTI is a penile plethysmograph system that includes integrated software, stimulus materials, hardware, and comprehensive training in clinical interpretation, and administration. MONARCH 21 is the result of more than forty years of innovation, clinical trail, scientific research and integration in the fields of sexual offender assessment and treatment. Every aspect of the MONARCH 21 System has been painstakingly designed and clinically tested to assure the most reliable, ethical, and standardized assessments possible.
Take a moment and learn about MONARCH 21…the System that Works!
Explore the MONARCH 21 System in depth to discover just how clinicians are able to use this ground-breaking device as a therapeutic tool.
MONARCH: The 33 Year Saga
Dr. Robert L. Card looks to the past and the future of the penile plethysmograph
MONARCH Software: Making Your Life Easier
Article by Peter M. Byrne, Ph.D.
Why a Butterfly?
Why BTI chose the MONARCH to represent its system
Clinical Benefits of Integrated Systems
Dr. Jeffrey Golde explains how MONARCH addresses concerns about the PPG
Turning Off Sex Abusers
By Amy Donaldson, Salt Lake Observer