V-Check DC Voltage Monitor Kit

These will be available online immediately after the Huntsville Hamfest

Stop guessing what your power supply is actually doing. The V-Check is a compact, solder-it-yourself DC voltage monitor built for anyone running 12–14V gear — ham radio operators, mobile installers, and field station operators who want to know exactly what's coming through the line, every time.

Plug it into any Anderson Powerpole®-equipped 12V source and you're instantly reading live voltage, watching for dips and spikes, and getting alerted the moment something's off — before it costs you a radio.

What you get:

• Live voltage readout with an at-a-glance 8–18V bar graph
• Adjustable LOW and HIGH voltage alarms, each with an optional audible alert — so you'll know even when you're not staring at the screen
• Min/Max memory that tracks your last 5 power cycles and catches dips and spikes as short as 10ms, so nothing slips past unnoticed
• Reverse-polarity protection with a clear on-screen warning
• Anderson Powerpole® input — the standard for 12V DC in the ham radio and emergency-comms world
• All through-hole parts, with sockets for the microcontroller and display — beginner-friendly soldering, no surface-mount required
• Builds in under an hour, making it a great pick for a solo evening project or a club build party
• 3D-printable enclosure files available, so you can house it exactly how you like

Whether you're checking an unknown power supply before you trust your rig to it, keeping watch over your shack's DC bus, or monitoring voltage on the road, V-Check has you covered.

Check out the full user manual or the quick start guide--

Full Assembly and User Manual

Quick Start Guide

Grab a kit, warm up your soldering iron, and start seeing your power supply the way it deserves to be seen.