| Legend |  |
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| Model | NLT50-1 | NLT50-2 | NLT50-3 | NLT50-4 | NLT50-5 |
| Function | T:steady burn,W:falshing,J:With Buzzer | T:steady burn,W:falshing,J:With Buzzer | T:steady burn,W:falshing,J:With Buzzer | T:steady burn,W:falshing,J:With Buzzer | T:steady burn,W:falshing,J:With Buzzer |
| Light Source | LED | LED | LED | LED | LED |
| Lighting |
 LED Stady Burn/Flashing/Revolving |
LED Stady Burn/Flashing/Revolving |
|
LED Stady Burn/Flashing/Revolving |
LED Stady Burn/Flashing/Revolving |
| Power | 2W | 4W | 6W | 8W | 10W |
| Play Sound | 1 2 3 4 5 | 1 2 3 4 5 | 1 2 3 4 5 | 1 2 3 4 5 6 | 1 2 3 4 5 |
| Voltage |
DC12V DC24V AC110V AC220V |
DC12V DC24V AC110V AC220V |
DC12V DC24V AC110V AC220V |
DC12V DC24V AC110V AC220V |
DC12V DC24V AC110V AC220V |
| Segments Num. | 1 Segments | 2 Segments | 3 Segments | 4 Segments | 5 Segments |
| Color |
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Hotline