It has been designed for entrance door of any flat with the aim to inspect the landing area. The optical circuit design allows to see even the article hanging on the door handle. Specially designed strap protects the inspection hole from unscrewing on the outside. Additionally the inspection hole ГДШ-200-10 is furnished with a decorative panel.

Specification:

Angle of sight, °	200
Overall dimensions, mm, not more	31 х 45
Weight, kg, not more	0,05