Leica DA220, 3 Watt Signal Transmitter incl. Li-ion battery and A100 charger, used to apply a trace signal to underground utilities. Features three trace frequencies, 8kHz 33kHz and 131kHz with a variable power output level up to 3 Watts. Compatible with the Leica Detect DD220, DD120 locator range. Includes, Three Year warranty, Li-Ion battery pack, A100 charger