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| lamp beads | specific traffic lighting LEDs |
| pixel pitch | P16,P20,P25,P31.25,P33.33 |
| display dimension | customize |
| cabinet material | aluminum or cold rolled iron |
| chip color | amber, tri-color , full color or custom |
| brightness | >10000cd/m2 |
| brightness adjust | manual or auto adjust |
| viewing distance | 250-300m |
| control mode | asynchronous control |
| communication port | RS232/RS485/RJ45/GPRS/3G etc |
| Refresh rate | >120hz |
| certificate | CE/FCC/ROHS etc |
| life span | 100,000 hours |
| rate of dot out of control | <1/10000 |
| Insulation resistance | >100MΩ |
| high voltage resistance test | withstand 1500V / 50Hz AC voltage for 1 minute without breakdown |
| Impact resistance test | pass |
| Vibration resistance test | pass |
| Contact resistance | <0.1Ω |
| Protection class | IP65 |
| Operating Humidity | 5%-95% |
| Operating temperature | -40ºC~+75ºC |
| power supply | AC220V±18% / 50Hz±10% |
| | AC380V±18% / 50Hz±10% |
| Name | Specification | Function | ||
| control system | main control system | communicate with the centerof the screen drive traffic monitoring | ||
| | Brightness adjust system | Brightness adjustment based on ambient light traffic control system screen brightness | ||
| power system | power distributor | Centralized power system distribution box | ||
| | power lightning protection devices | imported professional ightning protection | ||
| | signal lightning protection devices | devices | ||
| | Remote Switch electrical system | Remote Switch electrical system with remote, step-switch function | ||
| Communication module | RS-485 communication moduleindustrial grade communication module | Industrial communication module | ||
| | RS-232 communication module | | ||
| | Ethernet communication module | | ||
| LED variable message signs screen perform the following national standards | | | ||
| LED variable message screen | GB/T 23828-2009 | fully in accordance with international design, production and testing | ||
| Traffic sign display | GB 5768.2 | traffic sign text, graphics meet the standards | ||
| Chinese character display | GB 2312 | digital display standard Chinese characters | ||
| Shell protection grade | GB 7000.1 | IP65 protection rating | ||
| Communication interfaces and protocols | JT/T606.1 and JT/T606.3 | standard asynchronous | ||








