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NightOwl – TLM

Stand-Alone Remote Wireless Tank Level Monitor
NightOwl – TLM
  • Setting Up Smart Devices

Features

Real-Time Monitoring

Real-Time Monitoring

Track tank levels, pump activity, and water flow instantly from anywhere.

Instant Alerts

Instant Alerts

Get notified via app, email, or text when critical thresholds are reached.

Secure Connectivity

Secure Connectivity

IoT-enabled communication ensures dependable, encrypted data transfer.

Simple Setup

Simple Setup

Plug-and-play installation with intuitive configuration — no extra tools required.

Cloud Dashboard

Cloud Dashboard

Access historical trends, system health, and detailed reports in one place.

Take Control of Your Tank Levels Today

Ensure accuracy, prevent costly surprises, and gain peace of mind with real-time tank monitoring.

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  • Smart Tank Monitoring

Stay Ahead with NightOwl™ TLM

Our wireless tank level monitor delivers accurate, real-time insights into water, chemical, or storage tanks. With built-in IoT connectivity and cloud reporting, NightOwl TLM ensures you’re always informed of system status. Receive instant alerts, reduce emergency callouts, and manage resources more efficiently — all from your smartphone or dashboard.
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  • FAQs

NightOwl - TLM FAQs

Get clear answers to the most common questions about the NightOwl -Tank Level Monitor from installation and connectivity to alerts and system compatibility.

What makes NightOwl-TLM different from Flex or Ultra?
The TLM (Tank Level Monitor) is designed as a stand-alone, remote, battery-powered, wireless tank level monitor specifically for liquid storage tanks. It uses radar technology to measure tank levels from 0.5 to 20 feet and is built for long-term deployment with a 4-year battery life. The TLM takes measurements every hour and publishes data daily, making it ideal for applications that require reliable tank monitoring without frequent maintenance. It's Cl1 Div1 Zone0 certified for hazardous environments.
Can I manage multiple sites with TLM?
No, The NightOwl-TLM is ideal for installations that require monitoring one well. To monitor multiple wells, please explore the NightOwl Flex or Ultra product.
Is TLM secure enough for municipal use?
The TLM uses cellular connectivity to transmit data securely to the cloud-based dashboard. The system includes robust user management with role-based access controls, allowing you to limit who can view or modify each installation.
Do I need professional installation for TLM?
The TLM is designed for straightforward installation by water system professionals. For water tanks, you'll need to cut a 2-inch hole in the tank top (invasive method) to avoid humidity interference. Basic tools required include a drill with a 2-inch hole saw, measuring tape, torpedo level, and possibly silicone sealant. The unit comes with detailed instructions and uses a simple magnetic activation process. Most installations can be completed in under an hour.
Who should choose TLM?

The TLM is ideal for water system operators of small rural water systems, residential systems, and bulk water delivery service providers who need reliable, long-term tank monitoring with minimal maintenance. It's perfect for remote locations where you want 4-year battery life and don't need real-time data (since it reports daily). Choose TLM if you're monitoring water storage tanks, need hazardous area certification, or want a cost-effective solution for basic level monitoring.