The design and construction of the body is done using ABS resistant to heat, voltage fluctuations, impact and vibration. On the back of the thumb there is enough space for the entry and exit of zone wires. Detachable socket terminal facilitates installation and implementation of standard connections.

By using a special key, periodic visits can be made without the need to open and close the door. The thumb circuit is made of double-layer metallized fiberglass and protection against moisture and corrosive environments is provided by applying a cover layer. To protect the metal parts from rusting, chrome plating has been done on these parts. Protection against reverse polarity also prevents damage to the thumb circuit if there is a mistake in the thumb wiring.

Other features of this Shasti model include design, production and multi-stage quality control by the latest machines and laboratory equipment, golden warranty and fast and available hardware and software after-sales services, and tracking code for product authenticity inquiries. . The design and construction of this Shasti model has been done based on the requirements of the Iranian national standard No. 6174 and the international standard EN 54-11.