https://www.asmag.com/project/assa_abloy_digital_access_control/index.aspx

Product Info

Asia Security Solar-Powered Siren

Asia Security Technology Co., Ltd.

Region: China

Update: 05/15/2012

Key Specifications

* Powered by solar panel, no main power needed
* Weatherproof and stylish design
* Built-in 2pcs of 1.5V/1800mAh lithium battery enable 10-day standby
* Piercing 115dB siren with selectable duration, volume adjustable

https://www.asmag.com/project/dahua_xinghan_large-scale_ai_models/