Zmachine® Synergy

Combining FDA-cleared EEG-based sleep staging technology with traditional respiratory measures, the Zmachine Synergy delivers everything you’d expect in a next generation home sleep testing system. General Sleep didn’t invent the home sleep test, they just made it better!


Easy for Patients
With crystal clear instructions, ultra-small package, and a streamlined setup procedure, your patients will find the Zmachine Synergy easy to use and comfortable to wear during sleep.
Easy for Providers
Score and interpret the data yourself, or let Zmachine's team of expert registered PSG technologists and board certified sleep physicians (licensed in all 50 states) handle everything for you with scoring and physician reports available within 48 hours of data upload. All data is viewable and editable via Zmachine's advanced web portal.
Full Range of Signals
EEG-based sleep staging, respiratory airflow, snore, CPAP flow, CPAP pressure, respiratory effort (RIP), 3-axis body position & activity, and pulse oximetry make this system complete and ready to use.
Advanced Sleep Reports
With the addition of EEG-based sleep staging and a 3D body position sensor, the AHI is calculated on sleep time, REM time, and sleep position (not simply recording time). This results in accurate and informative AHI values, especially for those patients with lower severity, difficulty sleeping, and those with position dependent symptoms. The addition of EEG also enables the reporting of RERAs (i.e. non-desaturating hypopneas terminating with EEG arousals) for improved event reporting.
Insurance Reimbursement *
CPT 95800 (use 95806 when EEG is not used) HCPCS G0398 (use G0399 when EEG is not used) *Provider is solely responsible for determining the applicability of any reimbursement code prior to use.



Client Software for Windows 7 & 10       Ver 1.0.64       Windows 7 & 10  


Zmachine Synergy Clinician Manual                  Ver 1.8      Adobe Acrobat 
Zmachine Synergy Patient Guide – English      Ver 1.13    Adobe Acrobat

Patient Video


The Zmachine Synergy uses the same technology to acquire and process EEG data as the Zmachine Insight/Insight+.

Yes, click here.

You can order disposables with upload credits directly through your Zmachine Synergy Client Software. Click Account -> Billing -> Order Supplies.

General Sleep Corporation warrants the Purchased Product (Zmachine Synergy) to be free of all defects in material and workmanship for two years from the date of Purchase. The effort belt, effort belt cables, and oximeter finger probe are guaranteed for one year. This warranty is extended to the Original Purchaser only.

Within this period of warranty General Sleep Corporation will repair or replace, free of charge, any product defective in material or workmanship. All warranty repairs and service must be performed by General Sleep Corporation. Contact General Sleep to obtain a Return Material Authorization (RMA) prior to shipping systems back for evaluation and/or repair.

The Zmachine Synergy can be returned for any reason within 30-days. We do not refund shipping or used disposables.

Schedule aN Expert CAll

Have a question? Need advice on where to start for your unique practice? Schedule an expert call and one of our practice consultants will help get you started. 

Speaker Packet

Crystal May

Co-Founder & COO
Dental Sleep Medicine & Medical Billing

Laurie Owens

Director of Medical Billing Education
Medical Billing

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