Review on Enhanced Loop Vehicle Sensor and Detector: Ensuring Safety, Gate Exit, and Efficient Traffic Signal Controls with Visual and Audible Feedback. Compatible with All Systems, 12-24 Volt AC-DC Universal by Daniel Steele

Easy installation. love nothing I even like the beep when a vehicle drives over it. I replaced the fried loop detector with this, the cheapest I could find and I love how it works! I connected all the wires to the correct inputs on this device and this is the output to the "Output" input on my gate controller. Then a van pulled up and the device made an audible noise while the van was standing in the roundabout, then my gate opened! Works perfectly! 👍