ABH-200-H
Online humidity monitor
T/RH for warehouses
On-board temperature and humidity monitor for pharma warehouses and humidity-critical storage — APIs, biologics, finished goods.
Design visualization · 88.2 × 69.9 × 16.8 mm
ABH-200-H — every number a QA team asks for
Channel-level accuracy, memory depth in readings, enclosure geometry and the firmware trust chain — the full picture before you ask for the pilot.
| Product type | Online · Wi-Fi monitor |
| Sensing channels | 2 (Temperature · Humidity) |
| Temperature | SHT41 · −40…+125 °C · ±0.2 °C typ / ±0.4 °C max (0–65 °C) |
| Humidity | SHT41 · ±2.0 %RH max |
| Measurement accuracy | Sensor ±0.2 °C typ · ±0.4 °C max (0–65 °C) on-board SHT41 · system class 1 as-shipped on live USB (class 0.5 on battery / with USB power save) |
| Display & indication | 1.54″ e-paper 200 × 200 · −25…+50 °C · holds last reading while asleep |
| Connectivity | Wi-Fi 2.4 GHz (ESP32-C3-MINI-1U) · MQTT over TLS 1.2+ — Internal FPC · ≤2.33 dBi |
| Power | USB 5 V (≈24 mA) · CR2032 RTC ≈10 yr |
| Battery life | Always on when powered · RTC cell ≈10 yr — The leanest online unit in the line |
| Memory | 16 MB W25Q128JV · 409,600 readings · separate never-erased audit region |
| Sample interval | 1 s minimum · configurable |
| Enclosure | 88.2 × 69.9 × 16.8 mm · Healthcare-grade disinfectant-resistant PC/ABS · UL94 V-0 · white |
| Ingress protection | IP54 in use / IP65 capped (design targets) |
| Mounting | Keyhole (2×) + bonded 10×2 mm magnets |
| Operating band | −25 to +50 °C (e-paper limit) |
| Firmware | Signed .abhfw packages · dual-bank A/B · RSA-2048 · trial boot with automatic rollback · MQTT over TLS 1.2+ with per-device credentials · X.509 client certificates / mTLS on the roadmap |
| Factory identity | ABH-[model]-[YYWW]-[5-digit sequence] — factory identity written to the ID EEPROM |
| Ports | USB-C power |
The ABH line is at the design-frozen, pre-production stage: every enclosure has passed generated fit-check geometry (791/791 checks, 20/20 SKUs) and every battery-life, drop, thermal and IP figure shown is a calculated or simulated design estimate — measured values replace them as validation hardware runs. Regulatory marks above are the certification roadmap, not held certificates.
- Deploy per zone, per rack — every point in one tenant record
- Sealed, vented SHT41 chamber isolates the sensor from enclosure air mass
- E-paper shows live values without opening the platform
- Warehouses & humidity-critical storageMany points, one record — T/RH monitors per zone, or low-cost BLE nodes collected by one hub.
- ABH-100-M-BLE — BLE phone-app logger
- ABH-200-BLE-hub — Wi-Fi gateway + BLE hub
- ABH-200-H datasheetPDFFull specification, applications and probe options
- ABH range overviewAll 20 SKUs and the platform story
- Platform capability briefSoftware, compliance and architecture
Datasheets describe the current design release (ABH-PLATFORM 0.0.4). Battery-life and IP figures inside are calculated design estimates; measured values follow validation hardware.
One PCB, one firmware, one compliant record
One 80 × 50 mm 4-layer platform PCB — 146 parts, single-sided SMT — becomes 20 SKUs by BOM selection and a SKU record in the on-board ID EEPROM.
Signed .abhfw packages · dual-bank A/B · RSA-2048 · trial boot with automatic rollback
MQTT over TLS 1.2+ with per-device credentials · X.509 client certificates / mTLS on the roadmap
Plug an offline logger into a PC and it enumerates a FAT16 drive with README.TXT, DATA.CSV and an ECDSA P-256-signed REPORT.PDF — a self-verifying trip record.
Probe channel templates live in the ID EEPROM; the platform tracks NIST-traceable calibration certificates, due dates and reminders per probe.
Certification roadmap: EN 12830:2018 — temperature recorders · CE — RED / EMC / safety · FCC Part 15 · WHO PQS E006 — vaccine cold chain · IEC 61010-1 / IEC 62368-1 · UN 38.3 / IEC 62133-2 — cells & packs — targets, not held certificates.
Put the ABH-200-H to work
Book a demo and we'll scope a pilot around your sites — quantities, probes, alert rules and the reports your QA team will hand the inspector.