A good UV light is priceless in locating urine deposits. Unfortunately, when the carpet is severely soiled and hides the urine deposits, a UV light can be nearly useless. In these situations the CTI Triple Amp Urine Probe will detect even the invisible deposits. Triple amplification of the detection signal enables you to locate old dry urine that moisture probes will never detect. The sensitivity adjustment on this probe enables you to adjust for maximum performance in a wide range of environments. An LED indicates that the probe is on and functional and an audible tone is emitted when urine is detected.