Built for Law Enforcement & Field Operations

Never get caught with a dead battery again

VoltSentry monitors battery voltage on radar signs, construction equipment, and remote assets. Get SMS alerts when batteries run low — or when someone tampers with your gear.

6/12/24/48V
Multi-Voltage Support
< 2 min
Alert Delivery Time
48+ hrs
Backup Battery Life
$0.01
Per Reading (cellular)
Install in minutes. Monitor from anywhere.
Each VoltSentry module connects to your battery in parallel — no modifications to your existing equipment. It reports over cellular, so it works everywhere.
1

Connect to Battery

Two wires tap your existing battery in parallel. A 1A fuse keeps things safe. The module draws negligible power.

2

Auto-Reports via Cell

The built-in cellular modem sends hourly voltage readings to the cloud. No WiFi, no gateway hardware needed.

3

SMS Alerts Sent

When voltage drops below your threshold — or power is cut — your team gets an immediate text message with the sign's location.

4

Manage in the App

Track all your equipment on one dashboard. Manage contacts, set thresholds, view voltage history, and see GPS locations.

Purpose-built for remote battery monitoring
Every feature designed for the realities of field equipment — extreme temperatures, no WiFi, theft risk, and batteries that die without warning.

Multi-Voltage Support

Works with 6V, 12V, 24V, and 48V systems. One platform for radar signs, construction equipment, solar arrays, and more.

🚨

Theft & Tamper Detection

If someone disconnects the battery or steals your equipment, VoltSentry sends an urgent alert with GPS coordinates within seconds.

🔋

Built-in Backup Battery

Internal LiPo keeps the module alive 24–48 hours after main power is cut, continuing to send GPS updates for recovery.

📡

SMS Alerts

Configurable text message alerts to multiple contacts. Set who gets notified for which equipment. Includes test messages.

🌎

GPS Location

Built-in GPS tracks each unit's location. See all equipment on a map. Essential for theft recovery and field management.

📱

Cross-Platform App

Manage everything from iOS, Android, Windows, or any web browser. Real-time dashboard, voltage charts, and contact management.

Built for the field, not the office
VoltSentry started with law enforcement radar signs and expanded to anywhere batteries power critical equipment.
🚨

Radar Speed Signs

Know exactly when to swap batteries. No more dead signs on busy roads.

🏗

Construction Equipment

Monitor generators, light towers, and equipment batteries at remote job sites.

☀️

Solar Installations

Track battery bank voltage on off-grid solar systems. Alert before power loss.

📷

Trail Cameras

Wildlife management and security cameras. Know when batteries need replacing.

🚢

Marine & Boats

Monitor boat batteries at the dock. Get alerted before you're stranded on the water.

🚌

Fleet Vehicles

Track battery health on patrol cars, work trucks, and specialty vehicles.

🗺

Cell Tower Backup

Monitor 48V telecom battery banks. Know instantly when backup power fails.

Emergency Generators

Ensure backup generators are ready to start. Monitor starting batteries 24/7.

Simple, transparent pricing
Hardware at cost. No surprise fees. Volume discounts available for 10+ units.

Self-Hosted

$149/unit
One-time hardware cost. You run the server.
  • Pre-assembled VoltSentry module
  • Multi-voltage support (6/12/24/48V)
  • Built-in backup battery
  • GPS + theft detection
  • Open-source app & backend code
  • Setup guide & documentation
Request Quote

Ready to stop guessing when batteries die?

Get in touch for a custom quote. Volume discounts available for agencies and organizations.

Contact Us