The FXL 12 deep grey sonde/transmitter operates at depths of up to 25.9 meters. Long probe body for enlarged drill head. Suitable for all DigiTrak F2 and F5 locators. Frequency 12 kHz. The sonde transmits 12 clock positions and inclination with an accuracy of 0.1%. Switches to standby mode after 15 minutes. Operating time increased by 2 times - Power consumption reduced while maintaining signal strength. Power consumption of the “branded” sonde in operating mode is up to 150 mA, while our upgraded model consumes 75-85 mA. In the drill head, power consumption increases by 70-100% due to losses: the original transmitters consume up to 250 mA, while the upgraded ones consume 120-150 mA. Increased reliability when working in heavy soils or in percussion drilling rigs - The probe's structural elements responsible for trouble-free operation in harsh conditions have been reinforced.