The HM11 is a wireless, real-time vibration and temperature sensor that deploys in minutes. Sensors mount directly onto machines and continuously stream data on the health of critical equipment, thereby reducing unplanned downtime and lowering maintenance costs.

Unified asset health dashboard

Monitor critical equipment across plants or remote sites on one screen, with real-time visibility and alerts on the health of each machine.

Samsara enables continuous tracking of key health parameters for critical equipment including motors, compressors, pumps, fans, etc., allowing you to replace manual walkarounds, catch issues early and improve machine performance.

With real-time email and/or text alerts, and advanced analysis tools like Fast Fourier Transform (FFT), Samsara helps you diagnose machine faults quickly so you can take timely corrective action and avoid expensive unplanned downtime.

HM-series monitors are designed for harsh operating environments. IP67-rating protects against splashes, spray, power washing, dust, and other environmental wear and tear. In addition, the HM11 has a durable design with exceptional resilience to impact.

With the industry’s most advanced wireless technology, HMs transmit sensor data in real time to Samsara gateways, enabling operators to see up-to-the-second sensor data over the web and to receive instant alerts. Even with always-on wireless networking and data-logging, the HM11 runs for more than three years off of a single AA battery.

HM-series monitors are wireless sensors that mount directly onto machines via magnets or epoxy, without needing to run any conduit or wiring. In addition, they require zero-configuration and connect wirelessly via Industrial Gateways, removing the need for any servers or IT setup.

Included Sensors


Temperature sampled every 4 seconds
Vibration sampled every 5 minutes


Automatically detects and connects to any gateway associated with the same account


100 ft / 30 m (line of sight). Actual range depends on RF interference, building materials, and physical obstacles

Radio Frequency

2.4 GHz, proprietary low-power sensor data protocol

Data Logging


3 months on-device storage of vibration & temperature data

Data Upload

Automatic (zero-touch) wireless data upload via Samsara gateways



63mm x 63mm x 30.5mm (2.48in x 2.48in x 1.20in)



Operating Temperature

-40° to 85° C


3+ year battery life. User-replaceable AA battery




Magnetic or industrial-grade epoxy (for non-ferrous surfaces)

Ingress Protection

IP67 rated waterproof and dustproof per IEC standard 60529. Designed for splash, spray, and dust.

Hazardous Location

Certified for Class I, Division 2, Groups A,B,C,D.


Requires HM license. License includes cellular data connectivity, cloud software, mobile apps, ongoing firmware updates, maintenance, and support. Available in 1, 3, and 5-year terms.