Switch hardware
The metal that ends the argument.
Every SEARIN deployment ships real switchgear. These are the units, their specifications and what they cost — order here and a commissioning engineer confirms survey, stock and install date.
Built to sever
One severance core, four enclosures.
The same certified cut mechanism sits inside every unit. What changes is the scale of what it can open: a household circuit, a rack row, a building or a federation of sites.
Units and pricing
Specifications and list price per unit.
Prices are for the unit itself. Installation, accessories and rehearsal are chosen at order.
Residential
Sentinel Home SH-1
A single wall unit beside the consumer unit. Cuts household AI power circuits and the uplink that feeds them.
$1,490per unit
- Form factor
- Wall box, 320 × 220 × 95 mm, IP54
- Severed vectors
- AI appliance circuits, Wi-Fi/cellular uplink, local agent host
- Authority
- Single certified key, child-resistant cover
- Switching
- 40 A 2-pole contactor + uplink relay
- Backup
- 18-hour lithium pack, cuts during outages
- Capacity
- Up to 64 devices and local agents
- Latency
- Under 3 s from key turn to latched open
- Ledger
- Local signed log, exportable over USB-C
Most deployed
Flagship · rack
Sentinel Mk.II MK2-R
The 4U rack interlock for data halls and server rooms. Two-person authority over breakers, PDUs, cooling and fibre.
$18,400per unit
- Form factor
- 4U 19-inch rack chassis, tamper-evident housing (REV-B production chassis; the REV-A bench prototype is 2U)
- Severed vectors
- Breaker, PDU bank, cooling loop, fibre trunk, identity revoke
- Authority
- Dual certified keys, two-person rule, signed identity
- Switching
- 4 × 250 A breaker trips, 16 PDU channels, 8 fibre shear ports
- Backup
- Air-gapped controller, 72-hour supercap and battery
- Latency
- Under 800 ms digital, under 3 s physical
- Signal-loss behaviour
- Customer-chosen: stay on and alarm (default) or open
- Ledger
- Append-only signed custody ledger, read-only audit channel
Flagship · wall
Sentinel Mk.II MK2-W
The same Mk.II severance core in a wall enclosure for offices, labs, clinics and branch sites without a rack.
$16,200per unit
- Form factor
- Wall enclosure, 600 × 400 × 210 mm, IP65
- Severed vectors
- Distribution board, uplink, on-prem compute, identity revoke
- Authority
- Dual certified keys, two-person rule
- Switching
- 2 × 160 A breaker trips, 8 PDU channels, 4 fibre shear ports
- Backup
- Air-gapped controller, 72-hour battery
- Latency
- Under 800 ms digital, under 3 s physical
- Signal-loss behaviour
- Customer-chosen: stay on and alarm (default) or open
- Ledger
- Append-only signed custody ledger
Critical scale
Sentinel Sovereign SV-C
A hardened federated controller holding severance authority across regions, operators and cloud estates.
$96,000per unit
- Form factor
- Hardened floor cabinet, EMP and tamper resistant
- Severed vectors
- Federated interlocks, operator estates, cloud control planes
- Authority
- Quorum authority mapped to constitutional roles
- Switching
- Commands up to 128 downstream Mk.II interlocks
- Backup
- Dual independent power feeds, 7-day autonomy
- Latency
- Under 2 s to federated cut confirmation
- Signal-loss behaviour
- Quorum-defined per region, with partition tolerance
- Ledger
- Signed multi-party ledger, independent regulator read channel
Hardware is one line of the severance chain. Monitoring, drills and response are priced per plan.
What's real today · updated 2026-09-26
Built, designed, certified — stated plainly.
Exactly what exists physically, where each safety certification stands, and when units ship.
Build status
Sentinel Mk.II (REV-A)
Built & bench-testedREV-A · 2U bench prototype
Physically built. Cuts real load on the bench with two-key authority, staged restore and a signed log. Not a sellable unit.
Sentinel Mk.II MK2-R / MK2-W
Design completeREV-B · 4U production design
Four-board production design with parts list and test plan. First REV-B units not yet built.
Sentinel Home SH-1
Design completeResidential derivative
Derived from the Mk.II severance core. Enclosure and circuit layout defined; no unit built yet.
Sentinel Sovereign SV-C
Concept designFederated controller
Architecture defined (quorum authority, up to 128 downstream interlocks). Built only per contract.
Safety certifications
| Standard | What it covers | Applies to | Status |
|---|---|---|---|
| UL 508A / UL 61010-1 | Industrial control panel and electrical equipment safety (North America) | All units | Planned — not yet submitted |
| IEC 60947 series | Low-voltage switchgear and control gear — the severance contactors and breaker trips | All units | Planned — not yet submitted |
| CE marking (LVD 2014/35/EU, EMC 2014/30/EU) | Electrical safety and electromagnetic compatibility for EU sale | All units | Planned — not yet submitted |
| FCC Part 15 | Radio-frequency emissions from the controller electronics (US) | All units | Planned — not yet submitted |
| NEC 645.10 alignment | IT-room disconnect practice — verified per site by the installing electrician | Mk.II, SV-C | Planned — not yet submitted |
| IP54 / IP65 enclosure rating (IEC 60529) | Dust and water ingress for wall enclosures | SH-1, MK2-W | Planned — not yet submitted |
| Witnessed factory acceptance test | Every shipped unit is cut-and-restore tested in front of a witness before release | Every unit | Planned — not yet submitted |
Timeline to shipping
Done
REV-A bench prototype
2U prototype built and cutting real load on the bench.
Done
REV-B production design
Four-board design, full parts list, enclosure and test plan complete.
Target Q4 2026
First REV-B units built
Initial production-design units assembled and tested internally.
Target Q1 2027
Safety & EMC testing submitted
Units submitted to an accredited third-party lab for the certifications listed.
Target Q2 2027
Pilot installations
Supervised pilot sites under evaluation agreements. No certified sale before this completes.
Target Q3 2027
Certified units ship
First customer deliveries, only after certificates are issued and a witnessed factory test passes.
Working prototype
Try the interlock before you buy it.
REV-A is on the bench cutting real load. The prototype page carries the build log, measured bench results and a live demo of the two-key interlock you can run yourself.
Certified partners
Order units direct from the line.
Certified installers, operators and sovereign programme partners buy Sentinel units at tier pricing with reserved build slots, registered keys and factory acceptance records.
Purchase
Order your switch.
Tell us the unit, the quantity and the site. Nothing is charged here — an engineer confirms the survey, the final figure and the install date before anything ships.