Central Station

A security system is installed in a commercial or residential building. Upon a trigger event ( like a break in, hold up or fire), the system seizes the phone line and calls the CMS (central monitoring station), which may be an alarm company or a special organization. The system sends data over the phone line and is received and acknowledged by a hardware device called digital receiver. The receiver sends the alarm information to a computer where it is interpreted, processed and presented to a dispatcher for action. In the case of a break in or hold up, the dispatcher may attempt  verification of the event by calling the premises (also known as a subscriber) or will dispatch the police depending on the procedures followed at the central station or the instructions given by the resident or business. Dispatchers can also send medical help, fire personnel, service and maintenance personnel. Digital Receiver The DR-4 is a 4-line Digital Receiver designed to interpret specified DTMF communication formats. All information received is displayed on a 40-character LCD screen, and can be sent to a parallel printer and through RS-232 serial port to a computer. The built-in real time clock stamps all incoming information with time and date. Up to 256 events can be stored in the non-volatile memory, no information is lost or deleted when AC power fails. The log of events can be examined on the LCD display or printed. With a microphone & earphone, the operator also can listen to or talk with the caller immediately through DR-4 when an alarm call comes in. Features : Handles 4 phone lines. 40-character backlit LCD display, easy to read. Non-volatile memory for programmable configuration and 256-event storage. Real time clock. Sound warning for each event. 1 parallel printer port. 1 serial RS-232 port. 2-way audio. 100 -- 250VAC, 50 or 60HZ power.

Scientech Electronics Co., Ltd.