Battery Specifications: Built-in DC3V Lithium battery
RF Frequency : 868MHz ± 50KHz
RF Distance : > 100 meters
Standard : VdS3515, VdS3131
Alarm Volume : >85dB(A) @ 3 meters
Battery Service Life: >10 years
Hush Time : 10 minutes ±10%
Size : φ114mm x 38mm
10 hours anti-disturb design when low battery status
| Model NO. | OK511SD |
| Operating voltage | DC3V Lithium Battery |
| Main Material | ABS |
| RF Frequency | 868MHz ± 50KHz |
| RF Distance | > 100 meters |
| Standard | VdS3515, VdS3131 |
| Alarm Volume | >85dB(A) @ 3 meters |
| Hush Time | 10 minutes ±10% |
| Size | φ114mm x 38mm |
| Usable area | 216-431sq.ft |
| Sound level | 85dB/3m |
| Installation | Wall or Ceiling mounted |
| Working environment | 0℃~+45℃,(≤95%RH No congelation) |
| Life Time | 10 Years |
| Function | Fire Alarm |
| 10 hours anti-disturb design when low battery status | |


| 1 | Well trained sales team service for you. |
| 2 | Small MOQ, usually sample is available. |
| 3 | Support OEM & ODM: we can print logo or customs package according to our client's requirement. |
| 4 | Top quality: we have professional QC team to control the quality. |
| 5 | Timely delivery: we can send goods within 10~40 days after payment, it depend on products and quantity. |
| 6 | We work with DHL, UPS, FedEx, TNT and EMS for small order. For large order we can arrange shipment by air or by sea. |
| 7 | Satisfactory service: we treat clients as friends and 24 hours customer service. |
| Welcome to our company and enjoy the benefits of One-stop sourcing service!!! | |