The Sentry-1 is a two-piece wireless magnetic sensor with tamper switch and replaceable battery. Includes 3M double-sided adhesive mount. Ideal for climate-sensitive environments where doors left ajar cause inventory loss — with 24-hour monitoring, real-time alerts, logs, and reports.
Magnetic reed-switch pair detects door position instantly. Counts entries and dwell time.
Detects if the sensor is removed from its mount — alerts on physical tampering.
Low-energy radio with 328 ft (100 m) broadcasting range.
Upgradable to iMatrix Massive Mesh for networks of hundreds or thousands of sensors.
Over-the-air firmware updates via the Micro Gateway.
Stores log locally if the gateway is offline. Backfills to iMatrix Cloud when reconnected.
| Device type | Wireless magnetic switch |
|---|---|
| Measured states | Open · Closed · Tamper |
| Body dimensions | 2.16 × 1.0 × 0.51 in (55 × 26.2 × 13 mm) |
| Magnet dimensions | 1.5 × 0.49 × 0.43 in (38.5 × 12.5 × 11 mm) |
| Weight | 0.92 oz (26.6 g) |
| Waterproof rating | IP66 (waterproof, dust proof) |
| Broadcasting range | 328 ft (100 m) |
| Battery | CR2032 Coin Cell · 230 mAh |
| Battery life | 13 months (default reading cadence) |
| Network type | Bluetooth Low Energy |
| Features | BLE-based · Stores 6 months data · Upgradable to Massive Mesh · Counts entries |
Walk-in coolers and reefer trailers. Catches doors propped open before inventory thaws.
Loading dock and warehouse roll-up doors — entry counts and tamper alerts.
Medication cabinets and resident-room doors with tamper detection for assisted living.