| 1 | Suitable for annular fluorescent lamp. | |
| 2 | Can be us in zone same as equipped lamp. | |
| 3 | Suitable for incandescent lamp, mercury vapor lamp. | |
| 4 | Notice:The explosion-proof telephone can be used normally only equipped with BHE coupler. | |
| 5 | Adopts electronic ballast; emergency device can be equipped to the lamp by request; |