China newest 1 to 6 lines optical Alarm receiving center 

security alarm center,support on standard protocol like Contact ID, 4+2express, including  software

1. Caller ID display and alarm; caller tracing;

2. Automatic CONTACT ID,4+2 EXPRESS,4/2,4/1 and 3/1 policing call format identification;

3. Convenient installation and setup

4. Lightning-proof

5. Police call buzz reminding

6. Real-time telephone line status reminding

7. Real-time receiver software status reminding

8. Software setup for receiver function allowed

9. Supporting decimal or hexadecimal subscriber account number, with subscriber numbers exceeding 65,000

10. Operator and administrator passwords to ensure system security

11. Electronic map to allow automatic display of caller locations; optional individualized map functions for each subscriber

12. Subscriber local area map, enabling subscriber organization structure awareness and police force assignment scheduling

13. External map to display calling subscribers (map panel driver to be purchased separately)

14. Current subscriber disarming/arming status display

15. Self-definition of 3/1, 4/1 and 4/2 report codes

16. Amplifiable e-map

17. Automatic save, print, search, backup and restoration of police call data

18. Receiver control for automatic voice deletion in accordance with the police call categories

19. Disarming/arming and alarm reminding voice playing via sound card

20. Self-contained CPU, allowing the receiver to accomplish the majority of workloads; minimum PC requirements; no high-grade computers necessary; saving equipment costs 

21. Short-circuit terminal output capable of driving alarm light and sirens upon receiving police calls
The above are functions available in both single-line and multi-line receivers. Multi-line receivers also have the following additional functions:

22. Real-time timing, 300-pieces of calling information storage capacity (expandable to 1300 pieces) when the computer is power off

23. Receiving panel expandable to over 8-lines

24. Backup battery to ensure operation in conditions without AC power  

Technical Specification:

Single-line receivers:

voltage:   AC 220V

power:   10W (MAX )

dimension: W270×D185×H50

weight: <2KG

police call receiving format:  CONTACT ID,DTMF 4+2EXPRESS, 3/1,4/1 and 4/2 pulse(10-40pps),caller id

caller ID display format: FSK

maximum AUX police call current: 1A 30V

Multi-line receivers:

voltage:  AC 220V

power: 15W  (MAX )

dimension: W360×D230×H66

weight: <3KG

police call receiving format: CONTACT ID,DTMF 4+2EXPRESS, 3/1,4/1 and 4/2 pulse(10-40pps),caller id

caller ID display format: FSK

maximum AUX police call current:1A 30V

maximum number of lines of police call receivable: 8 or 16