This precise drilling guide device, consisting of a transmitter and receiver, allows for the safe alignment of the drill channel for wall and ceiling drilling up to 120 cm. Location is indicated by easily visible LED indicators and optional acoustic signals. Easily accessible marking aids on both the transmitter and receiver assist with center alignment. The integrated LCD display can determine the required drilling depth of up to 150 cm. When foreign objects are detected, an optical and acoustic warning is emitted. Thanks to its ergonomic design, the transmitter and receiver fit comfortably in the hand.