Product Features:
A convenient back-wall sensor when installing a TV on the wall.
Determine the position of metal and wood behind the wall!
Can be used on gypsum boards and wooden walls.
Can be used over wallpaper.
Comes with a convenient level for installation.
Product Details:
External dimensions: H 3.0 x W 1.2 x D 0.9 inches (75 x 30 x 22.5 mm)
Product Weight: 1.1 oz (30 g).
Product Contents: Sensor unit, instruction manual (English language not guaranteed), Trial batteries LR44 (AG13): 3 pieces.
How to Use: 1. Place the sensor on the wall and press the button. 2. When the lamp changes from red to blue, move the sensor along the wall. 3. There is a base where the lamp changes from light to flashing.
Note: The sensor is accurate but not 100%.