Sentry Monitoring Solutions is Maryland's most professional home detention and alcohol monitoring company.
Sentry is run by professionals. Professional in experience, training, demeanor, client interactions, court contacts and procedures.
Sentry offers home detention monitoring services utilizing GPS enabled ankle worn devices, alcohol detection devices and drug testing that are ordered by the courts or privately obtained by clients.
Sentry services district and circuit courts throughout Maryland, concentrating in Baltimore area jurisdictions.
Sentry handles clients charged with both violent and non-violent criminal offenses, as well as, alcohol related offenses, traffic charges and family law related issues.
Sentry practices "Accountability in Action". Both Sentry and clients are accountable for their actions while being monitored.
Sentry offers GPS monitoring nationwide. If the court allows, clients may live and/or work outside of Maryland and still be accurately monitored.
Start your inquiry
Find the right path for your situation.
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I'm a family member
Your loved one was just arrested, is awaiting sentencing, or is seeking home detention. We'll walk you through what to do and how to get an acceptance letter for court quickly.
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I'm an attorney or jurist
Direct access to referral forms and equipment specifications. We work daily with public defenders, private counsel, and the Maryland judiciary.
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I'm currently on the program
Quick links for active participants — schedule changes, payment portal, equipment troubleshooting, and how to reach our staff directly. New requests typically processed within one business day.
From first call to program completion.
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Inquiry & intake
Family members, attorneys, or the participant themselves call office. We collect basic case information: case number, charges, court, jurisdiction, hearing date, and proposed residence. Most intake calls take 10–15 minutes.
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Acceptance review
We verify the residence is technically suitable, and issue a formal acceptance letter on letterhead.
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Equipment installation
Once the court orders home detention, we schedule an appointment. The participant and a family member receive a full orientation on device care, schedule rules, and how to remain in contact with our team members.
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Active monitoring & completion
Sentry staff handle day-to-day supervision: schedule changes, equipment questions, court reports. At the end of the term, the device is removed and a completion report is filed with the court.
Court-grade equipment, calibrated for each case.
Different cases call for different monitoring. The court determines what's required — we deliver it reliably and with transparent reporting.
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OM500 active GPS with real-time location tracking, geofencing for approved zones (home, work, treatment), and immediate alerts for boundary, curfew or tempering violations. Devices report continuously over cellular networks.
HOUSE ARREST · CURFEW · STAY-AWAY ORDERS
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SCRAMx transdermal alcohol levels every 30 minutes, around the clock. Tamper detection is built in.
DUI · ALCOHOL-RESTRICTED RELEASE · PROBATION
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Scheduled and randomized urinalysis with same-day results for standard panels and lab confirmation when required. Conducted on-site by trained staff with full documentation for court submission.
PRE-TRIAL · DRUG ·COURT · PROBATION
WHY HOME DETENTION MATTERS?
A safer, more cost-effective alternative to incarceration.
Home detention is not leniency. It is a structured, technology-supported form of supervision that has been used by Maryland courts for decades to reduce taxpayer cost, preserve families, and lower reoffense rates — without sacrificing public safety.
01. Cost to the public
Incarceration in Maryland costs taxpayers significantly more per person per day than home detention. Home detention shifts that cost away from the public budget while keeping participants under continuous supervision.
02. Public safety
Our 24/7 monitoring center, documented violation response protocol, and direct coordination with law enforcement mean compliance failures are detected and acted on within minutes — not hours.
03 . Rehabilitation outcomes
Participants keep their jobs, support their families, continue mental health and substance use treatment, and stay connected to the community ties that lower the risk of returning to the system.