Model PP81, a case manufactured from resistant ABS of 2.5 mm thick. This high quality enclosure is surprising for its modern design and innovative line. It is ideal for transportable instruments which require a front control membrane keypad. Practical assembly with 4 safety screws for manual transit. Each unit includes seal screws and screws to secure the circuit, as well as the terminals for the batteries. a case manufactured from resistant ABS of 2.5 mm thick3