Cloud connected for 24×7 status information. View graphs of your Pro Plus™ system’s critical metrics, such as tank pressure and oxygen percent. Receive alerts when sensor readings are outside of normal ranges.
Provides real-time system monitoring for critical applications. Know your system’s status around the clock.

The Pro Plus™ contains the best features of the Classic Plus™, but adds a 5″ touchscreen, an online web portal, cloud monitoring and notifications, an onboard ultrasonic oxygen purity sensor, and remote software updates.
New 5″ Touchscreen Makes System Operation a Snap
Our new touchscreen user interface puts data and configuration functions at your fingertips:
- Easily view critical system metrics such as tank pressure, O2 %, and network connection status.
- Connect your HVO Pro Plus system to Wi-Fi.
- Choose your preferred language and units of measurement.
- Secure your HVO Pro Plus System with a pin code so that the configuration won’t be altered.
- Communicate Wi-Fi information to your Smart Relay(s) with a few button presses.




Introducing the Pro Plus™ mini: Pro Features, Low Cost
An affordable, all-in-one package that is a perfect fit for small-scale applications that require monitoring and oxygen purity sensing. Comes complete with either 10 or 20 LPM of oxygen generating capacity, a stainless steel rack, oxygen regulator, relay box, all necessary lines and cables, and a one year cloud monitoring & notification subscription.

Specifications:
- Mini: 120VAC/60Hz, 550W, 5A
- Supports regulator pressure up to 55 psi
- Stored oxygen volume: 690 Liters @ 100 psi
- Sound level: ~60 dB
- Dimensions (racked): Height: 54” x Width: 60” x Depth: 18”
- Weight with one/two concentrators: 225 lbs / 290 lbs
- Power requirements: 120VAC/60Hz power, 1200W (10 LPM) or 1800W (20 LPM)
- Outlet types: (1) NEMA 5-15R, (1) NEMA 5-20R
The Universal Relay Box
A 5-outlet Universal Relay Box is an alternative to the standard 3-outlet relay boxes, with advanced features. In the HVO System, the Main sends a signal to the relay box(es) and Drone(s) via a coaxial cable to switch the power on & off.

5-outlet Universal Relay Box supports both 120VAC/60Hz and 220VAC/50HZ Power
Universal Relay Features:
- Enables the attached concentrators and Drone(s) to be switched on with a configurable delay, so that the connected concentrators are “warmed up” before oxygen is captured.
- A configurable delay is applied when energizing the individual outlets on the relay box . This helps to prevent a power surge that might trip an electrical breaker.
- LED lights show the status of the Universal Relay Box and attached components, such as the Main, Drone and oxygen concentrators.
Seeing Eye™ Cloud Monitoring and Notification
Every Pro Plus™ system comes with a one year subscription to the Seeing Eye™ cloud monitoring and notification service. Benefits include:

- System metrics are updated every 10 seconds and stored in the cloud, where they may be viewed in the Seeing Eye™ web portal using any browser.
- Tracks tank pressure, oxygen purity, ambient, temperature, gas temperature
- Email and text notifications are sent when data is outside of normal ranges, e.g. when a tank pressure or oxygen purity is low.
- Configure multiple recipients to receive alerts via email and/or SMS (text) messages.
- Configure the thresholds that trigger alerts, and the frequency of notification.
Model Options
We offer three tank sizes (30, 60, and 80 gallon) and three compressor types. See the table below for details:
| Tank Size (Liquid Gallons) | O2 Volume at Pressure (Liters) | Compressor | Max. Input (LPM) | Max. PSI |
| 30 | 1,350 | Mighty Mite | 36 | 160 |
| 1,350 | Titan 1 | 54 | 160 | |
| 1,350 | Titan 2 | 63 | 160 | |
| 60 | 2,700 | Mighty Mite | 36 | 160 |
| 2,700 | Titan 1 | 54 | 160 | |
| 2,700 | Titan 2 | 63 | 160 | |
| 80 | 3,600 | Mighty Mite | 36 | 160 |
| 3,600 | Titan 1 | 54 | 160 | |
| 3,600 | Titan 2 | 63 | 160 |
