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Low Cost Interlock vs RoadGuard

Your state's approved list decides first: in most states you can only choose from the companies on it. Where both are approved, the device, the service centers near you and the fees are what differ.

Low Cost Interlock logoLow Cost InterlockLCI-77719 of 44 state listsApp Store 1.4 from 11 ratings
RoadGuard logoRoadGuardDräger Interlock 700028 of 44 state lists

Where each one is approved

AlabamaAlaskaArizonaColoradoFloridaGeorgiaIndianaKansasMaineMassachusettsMinnesotaNew JerseyNorth CarolinaNorth DakotaOklahomaPennsylvaniaSouth DakotaTexasWyomingConnecticutMissouriWest VirginiaIllinoisNew MexicoArkansasCaliforniaDelawareDistrict of ColumbiaHawaiiIowaKentuckyMarylandMichiganMississippiMontanaNew HampshireNew YorkOhioOregonTennesseeUtahVirginiaWashingtonWisconsinNebraskaSouth CarolinaIdahoNevadaVermontLouisianaRhode Island
BothOnly Low Cost InterlockOnly RoadGuardNeitherNo list we could read
Both 12

Arkansas, California, Connecticut, Florida, Idaho, Minnesota, Missouri, Nebraska, New Jersey, Oklahoma, Utah, Wyoming

Only Low Cost Interlock 7

Arizona, Kansas, Kentucky, Rhode Island, Texas, Vermont, Wisconsin

Only RoadGuard 16

Alabama, Alaska, District of Columbia, Georgia, Indiana, Iowa, Maryland, Massachusetts, Nevada, New Hampshire, New York, Ohio, Pennsylvania, Tennessee, Virginia, Washington

Low Cost Interlock vs RoadGuard: the devices

Low Cost InterlockRoadGuard
SensorThe LCI Co-Pilot uses a quarter-size electrochemical fuel cell sensor.1The Interlock 7000 handset uses an electrochemical sensor.2
How you blowThe LCI Co-Pilot uses a blow/hum or straight hum pattern, depending on your state.3RoadGuard says it is a simple blow-and-suck device.4
CameraOn the LCI-777, a camera is an optional accessory. An icon shows on the handset when one is attached.5An integrated infrared camera is optional.6
GPSOn the LCI-777, GPS is an optional accessory. An icon shows on the handset when it is attached.5A GPS configuration appears in the New York listing for the 7000.7
Real-time reportingThe LCI-777 shows a GSM icon when its cellular reporting hardware is attached.5Real-time reporting runs through an optional GPRS module.6
Warm-upThe LCI-777 warm-up may take up to 2 minutes.8Under 4 seconds above 0 °C, under 60 seconds at -20 °C, and under 110 seconds at -45 °C.9
Rolling retest windowThe LCI-777 asks for a sample 5-7 minutes into a rolling retest. The device FAQ gives a minimum of 5.10RoadGuard says you will have "several minutes" to give the test. It gives no figure.11
Operating temperatureThe LCI Co-Pilot handset is rated for -45 °C to +85 °C.12-45 °C to 85 °C.13
Size and weightThe LCI Co-Pilot handset measures 4.75 x 2.5 x 1.75 in and weighs 148 grams.14Handset about 138 x 61 x 36 mm and 178 g. Control unit about 148 x 90 x 32 mm and 300 g.15
ScreenThe LCI-777 has a color display.16The handset has a graphic color display.17
AppLow Cost Interlock offers an app called Warm Up App.18Bluetooth and infrared are used for data download. There is no consumer app.19
Electric and hybrid carsNot publishedNew York's fee schedule lists a higher hybrid install fee ($200 vs $100). RoadGuard makes no compatibility statement.20
BatteryNot publishedRuns on a 12 to 24 V supply, with a maximum draw under 2 A and under 1 mA on standby.21

Low Cost Interlock vs RoadGuard fees

FeeLow Cost InterlockRoadGuard
Monthly leaseas low as $78.76National, varies by state and vehicle22$92.00Filed in New York23
Installation$100-$250National, varies by state and vehicle24$100.00Filed in New York25
Calibration$25National, varies by state and vehicle26Not published
Removal$129.50National, varies by state and vehicle27$69.00Filed in New York28
Lockout or violation reset$125National, varies by state and vehicle29$75.00Filed in New York30
Missed appointmentNot published$50.00Filed in New York31
Closing or admin fee$150National, varies by state and vehicle32Not published
Enrollment or set-up$40National, varies by state and vehicle33Not published
Damage or loss$20-$500National, varies by state and vehicle34$900.00Filed in New York35
Insurance or protection planNot published$5-$10Filed in New York36

In Texas

Low Cost InterlockRoadGuard
Certified service centers373
Advertised$70–$100/moby quote
Installby quoteby quote

Texas DPS service center list; prices advertised Oct 23, 2026. Texas interlock guide

InterlockCompare is independent and isn't affiliated with either company. Not legal advice.

Sources 36 sources from 4 sites, including lowcostinterlock.com, rockallsafety.co.uk, roadguardinterlock.comShow

Every fact on this page comes from one of these.

  1. Quarter-size Electrochemical Fuel Celllowcostinterlock.com/wp-content/uploads/2025/05/LCI-Co-Pilot-User-Instructions.pdf
  2. Measuring principle Electrochemical sensorrockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  3. Blow/Hum Techniquelowcostinterlock.com/wp-content/uploads/2025/05/LCI-Co-Pilot-User-Instructions.pdf
  4. we have a simple blow and suck deviceroadguardinterlock.com
  5. Sync GPS GSM HUB Cameralowcostinterlock.com/wp-content/uploads/2021/12/2016-11-09-LCI-777-User-Manual.pdf
  6. can be equipped with a camera and/or a GPRS modulerockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  7. Draeger Interlock 7000 (Camera, GPS, & RTD)criminaljustice.ny.gov/opca/pdfs/Qualified Manufacturer Listing Devices-01202026.pdf
  8. This may take up to 2-minuteslowcostinterlock.com/wp-content/uploads/2021/12/2016-11-09-LCI-777-User-Manual.pdf
  9. Readiness for use < 4 sec. (above 0 °C)rockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  10. 5 to 7 minutes to submit a breath samplelowcostinterlock.com/wp-content/uploads/2021/12/2016-11-09-LCI-777-User-Manual.pdf
  11. You will have several minutes to give the testroadguardinterlock.com/wp-content/uploads/2019/04/interlock-7000-if-en-user-manual_1.51.pdf
  12. -45°C to +85°Clowcostinterlock.com/wp-content/uploads/2025/05/LCI-Co-Pilot-User-Instructions.pdf
  13. Temperature - 45 °C to 85 °Crockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  14. 4.75 x 2.5 x 1.75 inlowcostinterlock.com/wp-content/uploads/2025/05/LCI-Co-Pilot-User-Instructions.pdf
  15. Handset approx. 138 mm x 61 mm x 36 mmrockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  16. Color Displaylowcostinterlock.com/wp-content/uploads/2021/12/2016-11-09-LCI-777-User-Manual.pdf
  17. Graphic colour display in handset with full text messagesrockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  18. Warm Up Applowcostinterlock.com
  19. Infrared interface, Bluetoothrockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  20. Installation Fee (Hybrid)criminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  21. 12 V to 24 Vrockallsafety.co.uk/wp-content/uploads/2019/11/drager-interlock-7000.pdf
  22. As low as $78.76lowcostinterlock.com/ignition-interlock-pricing
  23. Monthly Feecriminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  24. Installation (one-time)lowcostinterlock.com/ignition-interlock-pricing
  25. Installation Fee (Standard)criminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  26. Calibration (per visit)lowcostinterlock.com/ignition-interlock-pricing
  27. Removal (one-time)lowcostinterlock.com/ignition-interlock-pricing
  28. Removal Feecriminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  29. Unlock codelowcostinterlock.com/ignition-interlock-pricing
  30. Violation Resetcriminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  31. Missed Appointment Feecriminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  32. Administrative transferlowcostinterlock.com/ignition-interlock-pricing
  33. Set-up / enrollment (one-time)lowcostinterlock.com/ignition-interlock-pricing
  34. Device replacementlowcostinterlock.com/ignition-interlock-pricing
  35. Lost, Destroyed Handset Fee (no insurance)criminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf
  36. Insurancecriminaljustice.ny.gov/opca/pdfs/Draeger-Device-and-Fee-Schedule-8-15-2021.pdf