In computing, a system call is the programmatic way in which a computer program requests a service from the kernel of the operating system it is executed on. This may include hardware-related services (for example, accessing a hard disk drive), creation and execution of new processes, and communication with integral kernel services such as process scheduling. System calls provide an essential interface between a process and the operating system.
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Call Button Happy Call HC-1400T
Wireless button. It has an original design and three colors. On the reverse side of the button is Velcro for fixing.23,00$ -
Wooden Stand Happy Call HC-140
Stylish wooden stand for call buttons Happy Call
9,00$ -
Call Button HC-110T Happy Call
Wireless button. It has an original design and three color solutions. On the reverse side of the button there is a Velcro for fixation.
23,00$ -
Call Button HC-108T Happy Call
Wireless button. It has an original design and three colors. On the reverse side of the button is Velcro for fixing.
22,00$ -
Call Button HC-104T Happy Call
Wireless button. It has an original design and three colors. On the reverse side of the button is Velcro for fixing.
22,00$ -
Call Button HC-100T Happy Call
Wireless button. It has an original design and three colors. On the reverse side of the button is Velcro for fixing.
30,00$ -
Call Button Happy Call HC-1000T
Wireless button. It has an original design and three colors. On the reverse side of the button is Velcro for fixing.
22,00$ -
Transmitter / Encoder TX125EN
Transmitter with Pocsag Encoder. Used in conjunction with the pager AL-924.
575,00$Transmitter / Encoder TX125EN
575,00$ -
Staff Pager DM-330p HappyCall
A pager for prompt service to visitors of cafes, restaurants, food courts, hotel guests, patients of private clinics and nursing homes, etc.
155,00$Staff Pager DM-330p HappyCall
155,00$ -
Pager Text-Digital Gapollo AL-924
Portable text-digital mini-pager for sending messages over long distances
160,00$ -
Guest Pager System DNCall HP-1500T + HP-150A + HP-150R
Guest pager is a new development to facilitate communication within a company, e.g., in a restaurant or a logistics company. It is a multifunctional pager system that can communicate in two directions.
999,00$