Inductive coupling with 33kHz signal by integrated antenna Direct coupling with 33kHz by external accessories Selectable transmitted power of signal Blinking or continuous signals Level battery indication Passive mode without transmitter Active mode with transmitter Automatic measurement of depth Manual/Automatic sensitivity selection Display backlight Speaker with volume control Headphone jack for use in loud environment Floor cap for housing protection > Each Unit Includes TX5000 : Transmitter for HT-5000 RX5000 : Receiver for HT-5000 Cable banana-alligator clip, 2m, 2 pcs Cable banana-alligator clip, 10m Metal probe Batteries Carrying bag User manual