DR.ÖTEK MT9s Handbuch Seite 7

e. Loosen the lock knobs on both sides of the search coil, and adjust
the search coil into the position paralleled with the ground. Please
note that the search coil is correctly installed.
BATTERY
Please use a 9V alkaline battery.
Remove the battery out of the battery box if the detector is left without
any operation for a long time.
KEYS
The detector sounds a "DU" tone at every effective touch.
 Power touch key
a. Touch the key once to start the detector with two "DU" tones. The
center LED indicator light flashes green and the ring LED indicator