Water resistant (floats) and tough, combined with all the very best digital signal processing filtering 500XP will help identify signals buried in the worst of noise
Simple two-button operation with dual signal strength indicating LEDs can work with any tone generator
Headset allows discrete use in quiet environments and can help in acoustically noisy areas
Option to enable acAlert. which helps warn users if brought near hazardous ac power voltages which may be inaudible if using the advanced filtering