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We design elegant, reliable Shabbos-Mode and certification-ready systems so elevators can run automatically on Shabbat and holidays — without compromising halachic standards or everyday building convenience.
We design elegant, reliable Shabbos-Mode and certification-ready systems so elevators can run automatically on Shabbat and holidays — without compromising halachic standards or everyday building convenience.
Each project includes full halachic certification and clear technical documentation so that managers, residents, and rabbinic authorities share a single, trusted reference.
Each project includes full halachic certification and clear technical documentation so that managers, residents, and rabbinic authorities share a single, trusted reference.
What we do:
What we do:
Kosher certification consulting — Halachic review, Star-K certification guidance, and coordination with recognized rabbinic authorities
Custom Shabbos-Mode retrofits — Configurable floor-stop patterns and timing schedules tailored per building and per holiday.
Factory integrations / Installer kits — Firmware, wiring diagrams, and ready-to-install packages for consistent, auditable results.
Documentation Deliverables — Comprehensive installation and verification records for internal files and professional review.
Support & training — On-site testing, signage, management orientation, and maintenance plans.
Optional remote monitoring — Cloud alerts for managers with local-only operation available for privacy.
Why kosher certification matters:
Why kosher certification matters:
Many elevators advertise a “Sabbath Mode.” Certification proves it.
Many elevators advertise a “Sabbath Mode.” Certification proves it.
Religious observance — Ensures the elevator operates fully within halachic parameters, avoiding prohibited sensor or circuit interactions.
Resident accommodation — Lets observant tenants and guests use the building comfortably and with dignity.
Transparent documentation — Reduces uncertainty and establishes a consistent standard for maintenance and upgrades.
Certification bridges faith and technology — Ensures your elevator is halachically correct and fully documented.
Operational trust — Reduces tenant complaints and administrative burden on managers.
Key halachic & technical issues we inspect:
Key halachic & technical issues we inspect:
Modern elevators include systems that may react to passenger presence.
Modern elevators include systems that may react to passenger presence.
We test and mitigate issues with sensors, displays, and controls that can create halachic problems while preserving safety. Our process identifies and mitigates these while maintaining smooth operation:
We test and mitigate issues with sensors, displays, and controls that can create halachic problems while preserving safety. Our process identifies and mitigates these while maintaining smooth operation:
Door-edge / IR sensors — Mitigate light-beam triggers when passengers enter or exit.
Relevel & position encoders — Suppress unintended electrical responses during cabin movement.
Motor & floor encoders — Prevent passenger movement from changing indicator states.
Load-weighing devices — Buffer readings or hide visible displays while maintaining accurate weight function.
Automatic deactivation risks — Guarantee Shabbos Mode does not terminate while occupied; otherwise provide audible warning.
LED / display outputs — Mute or mitigate status changes that could be halachically problematic.
Our certification process:
Our certification process:
Survey & evaluation — on-site inspection of controller, sensors, doors, and displays.
Design & proposal — Custom Shabbos cycle and mitigation plan.
Install & integrate — Low-downtime retrofit or factory fit with full wiring records.
Testing & Halachic Verification — Live testing under rabbinic oversight.
Certification & documentation — Final reports and official certification packet.
Handover & training — Signage, manager briefing, and optional monitoring setup.
Maintenance & updates — Annual review to ensure continued compliance.
Deliverables you’ll receive:
Deliverables you’ll receive:
Halachic verification and rabbinic psak.
Inspector-ready technical documentation and certification report.
Installer wiring diagrams and firmware (where applicable).
On-site test results and tenant signage.
Manager training and optional monitoring credentials.
The Halachic Need:
The Halachic Need:
A “stop-on-every-floor” feature removes button pressing — but halacha also considers sensors, weight readings, and light changes. Our certification process reviews each subsystem, disables or isolates problematic signals, and provides written verification confirming halachic compliance. This gives clarity to rabbinic authorities, assurance to residents, and organized documentation for building management — all from one trusted source.
Custom Solutions & Add-Ons:
Custom Solutions & Add-Ons:
When standard Shabbos Modes cannot meet halachic requirements, GramaChip develops custom hardware modules and firmware:
Modules to filter sensor signals
Load-weighing device display mitigations to prevent live display changes
Timed door-holds with audible alerts for IR sensors
Safe-exit overrides for timed Sabbath cycles
Middleware controllers to suppress or mitigate indicator LEDs while maintaining normal control logic
Local gateways for cloud-dependent systems
Each add-on includes schematics, testing logs, halachic certification, and a maintenance plan.
FAQs:
FAQs:
Q: Are built-in Sabbath Modes enough?
A: No. “Stop-on-every-floor” solves button pressing only. Factory modes often leave sensors, encoders, and displays active. Certification audits and mitigates the complete system and issues full documentation.
Q: Will Shabbos Mode require Internet access?
A: No — it runs fully offline. Cloud monitoring is optional.
Q: Who may use a Shabbos elevator?
A: Many halachic authorities permit use only for those with need (e.g., elderly or infirm). Certification clarifies the accepted usage conditions for each building.
Q: Can older controllers be retrofitted?
A: In most cases, yes. We perform a compatibility survey and design custom retrofit kits as needed.
Q: How long does installation take?
A: Most retrofits complete within a day with minimal disruption.
Q: What if Shabbos Mode ends mid-use?
A: Certified systems either prevent termination while occupied or sound a warning and allow safe exit.
Notable 2025 Installations & Certifications :
Tower 41 — Miami Beach, FL
The Waves — Surfside, FL
Rabbi Sabo’s Shul — Miami Beach, FL
The Premier House — Brooklyn, NY
Pinnacle Condominiums — Brooklyn, NY
Shabbos Elevators Kosher Certifications
Shabbos Elevators Kosher Certifications
Shabbos Elevator Certificate for Tower 41
Shabbos Elevator Certificate for The Waves
Shabbos Elevator Certificate for Premier House
Shabbos Elevator Certificate for B”M Bais Binyomin Tzvi
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