| Parking Guidance Sign | 
| Model | YDBZ-1-B-EL-FH | YDBZ-1-B-EL-I | YDBZ-1-B-EL-II | YDBZ-1-B-EL-III | 
| Max brightness | >8000cd/m2 | 
| View angle | >75° | 
| Display color | Red, green, yellow,amber | 
| Brightness control | Manual, automatic, timing, remote setting | 
| Control model | Synchronous, asynchronous, wired network, wireless 4G, etc | 
| interface | RJ45, RS232, RS485, RS422 | 
| Blind spot ratio | <0.0001, Discrete distribution | 
| MTBF | >10000h | 
| Life span | >100000h | 
| Protective performance | Short circuit ,open circuit,overvoltage,overcurrent,overload,overheating,leakage, lightning protection, etc | 
| Working tempreture/humidity | -40℃-- +60℃, 10-80%, nodew | 
| Storge tempreture/humidity | -50℃-- +80℃, 10-85%, nodew | 
| Wind resistance | 40m/s | 
| Protectiion class | IP56 | 
| Grounding resistance | Working grounding resistance<4Ω, lighting protection grounding resistance<10Ω | 
| Insulation resistance | >100MΩ | 
| Dilectric breakdown strength | AC1500V | 
| Visual recognition distance | Max dynamic visual recognition distance>210m, max static visual recognition distance>250m | 
| Installatioin | Frame type, cantilever type, Column type | 
| Input voltage | AC220V(1±15%) or AC380V(1±15%), 50±2Hz | 
| Environmental monitoring | Temperature,humidity,smoke, brightness, switching power status, box door status   |