NT502
* Subminiature volume: 81 x 36 x 18.5mm
* Frequency: 58KHZ or 8.2MHZ for option
* Alarm Sound: ≥95db±5%.
* 2 or 3 alarm function
* Standby time over 3 years
* Normal or Super lock for option
* Light and Sounds indication for switch on/off
* Low battery indication
3A
![](../upload/editorfiles/2017.5.1_11.29.21_5335.gif)
![](../upload/editorfiles/2017.5.1_11.29.35_5870.gif)
![](../upload/editorfiles/2017.5.1_11.29.47_3069.gif)